H. Beere

C. Sirtori, H. Beere, D. Ritchie, 2009, 2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference.

Intensity detection of terahertz quantum cascade laser radiation using electro-optic sampling

H. Beere, D. Ritchie, S. Barbieri, 2008 .

THz sideband generation at telecom wavelengths in a GaAs-based quantum cascade laser

C. Sirtori, H. Beere, D. Ritchie, 2005 .

Optical side-band generation in THz Fabry-Perot laser cavities

H. Beere, D. Ritchie, S. Chakraborty, 2017 .

Quantum interference of magnetic edge channels activated by intersubband optical transitions in magnetically confined quantum wires

H. Beere, D. Ritchie, C. Phillips, 2009, Journal of physics. Condensed matter : an Institute of Physics journal.

Generation and Detection of Terahertz Radiation

H. Beere, D. Ritchie, J. Freeman, 2012 .

Laser Local Oscillators for Heterodyne Receivers beyond 2 Terahertz

H. Beere, D. Ritchie, S. Pavlov, 2008 .

Improved wall plug efficiency of a 1.9THz quantum cascade laser by an automated design approach

H. Beere, D. Ritchie, J. Freeman, 2008 .

Magnetic-field-induced instabilities in localized two-dimensional electron systems

H. Beere, D. Ritchie, M. Pepper, 2008, 0810.2418.

High-performance planar light-emitting diodes

Cambridge, Pisa, M. B. Ward, 2002, cond-mat/0207735.

Effects of cryogenic temperatures on the performance of CW VECSELs

Anne C. Tropper, Keith G. Wilcox, Ian Farrer, 2013, Photonics West - Lasers and Applications in Science and Engineering.

Tuning of the intersubband emission below the longitudinal optical phonon energy in GaAs/AlGaAs quantum cascade emitters

A. Davies, E. Linfield, H. Beere, 2003 .

Broad gain in a bound-to-continuum quantum cascade laser with heterogeneous active region

David A. Ritchie, Harvey E. Beere, Jérôme Tignon, 2011 .

Investigation of the role of the lateral photo-Dember effect in the generation of terahertz radiation using a metallic mask on a semiconductor.

G. Daniell, H. Beere, D. Ritchie, 2013, Optics express.

Strong coupling at room temperature in ultracompact flexible metallic microcavities

H. Beere, D. Ritchie, J. Baumberg, 2013 .

Using Transmissive Photonic Band Edge Shift to Detect Explosives: A Study with 2,4,6-Trinitrotoluene (TNT)

Man Yi Ho, H. Beere, D. Ritchie, 2017 .

Single-Photon Superradiance from a Quantum Dot.

H. Beere, D. Ritchie, P. Lodahl, 2015, Physical review letters.

THz waveguide adapters for efficient radiation out-coupling from double metal THz QCLs.

A. Davies, E. Linfield, H. Beere, 2015, Optics express.

Coherent detection of metal-metal terahertz quantum cascade lasers with improved emission characteristics

H. Beere, D. Ritchie, S. Dhillon, 2014 .

Terahertz plasmonic antennas for Quantum Cascade Lasers

C. Sirtori, H. Beere, D. Ritchie, 2009, 2009 Asia Pacific Microwave Conference.

Tuneable polaritonics at room temperature with strongly coupled Tamm plasmon polaritons in metal/air-gap microcavities

H. Beere, D. Ritchie, J. Baumberg, 2011 .

Growth variations and scattering mechanisms in metamorphic In0.75Ga0.25As/In0.75 Al0.25As quantum wells grown by molecular beam epitaxy

H. Beere, D. Ritchie, I. Farrer, 2015 .

Graphene-Integrated Metamaterial Device for All-Electrical Polarization Control of Terahertz Quantum Cascade Lasers

H. Beere, D. Ritchie, S. Hofmann, 2019, ACS Photonics.

A general approach for hysteresis-free, operationally stable metal halide perovskite field-effect transistors

Satyaprasad P. Senanayak, H. Sirringhaus, R. Friend, 2020, Science Advances.

Research data supporting [Probing the topological surface state in Bi2Se3 thin films using temperature-dependent terahertz spectroscopy]

David A. Ritchie, Harvey E. Beere, Varun S. Kamboj, 2017 .

Superconductivity in AuNiGe Ohmic contacts to a GaAs-based high mobility two-dimensional electron gas

H. Beere, D. Ritchie, P. See, 2020 .

Erasable electrostatic lithography for quantum components

H. Beere, D. Ritchie, I. Farrer, 2003, Nature.

Surface plasmon quantum cascade lasers as terahertz local oscillators.

T M Klapwijk, S Dhillon, J N Hovenier, 2008, Optics letters.

Demonstration of a fully integrated superconducting receiver with a 2.7 THz quantum cascade laser.

H. Beere, D. Ritchie, S. Shi, 2015, Optics express.

Theory of the in-plane photoelectric effect in a two-dimensional electron system

S. A. Mikhailov, H. Beere, W. Michailow, 2021, 2110.15932.

Ultra-shallow quantum dots in an undoped GaAs/AlGaAs two-dimensional electron gas

K. D. Gupta, H. Beere, D. Ritchie, 2011, 1112.5150.

Line-defect photonic crystal terahertz quantum cascade laser

H. Beere, A. Tredicucci, D. Ritchie, 2019, Journal of Applied Physics.

Mode-locking of a terahertz laser by direct phase synchronization.

E. Linfield, H. Beere, D. Ritchie, 2012, Optics express.

Photo-luminescence study of heterogeneous terahertz quantum cascade lasers

H. Beere, D. Ritchie, J. Freeman, 2011 .

Smoothening of ultrathin Fe films grown on GaAs(100) observed by scanning tunneling microscopy and Brillouin light scattering

S. J. Steinmuller, H. Beere, D. Ritchie, 2007 .

Gain enhancement in a terahertz quantum cascade laser with parylene antireflection coatings

C. Sirtori, H. Beere, D. Ritchie, 2011 .

High Open‐Circuit Voltages in Tin‐Rich Low‐Bandgap Perovskite‐Based Planar Heterojunction Photovoltaics

H. Beere, D. Ritchie, Andrew J Pearson, 2017, Advanced materials.

Experimental Progress towards Probing the Ground State of an Electron-Hole Bilayer by Low-Temperature Transport

K. D. Gupta, H. Beere, D. Ritchie, 2011 .

Bow-tie plasmonic arrays loaded with graphene for the fast room temperature detection of terahertz quantum cascade lasers

Christian W. O. Sol, H. Beere, D. Ritchie, 2016, 2016 Conference on Lasers and Electro-Optics (CLEO).

High-performance planar light-emitting diodes

Cambridge, Pisa, M. B. Ward, 2002, cond-mat/0207735.

Plasmonic apertures for THz QCL near-field imaging

H. Beere, D. Ritchie, J. Zeitler, 2010, 35th International Conference on Infrared, Millimeter, and Terahertz Waves.

Amplification of terahertz radiation in quantum cascade structures

H. Beere, D. Ritchie, R. Green, 2007 .

Terahertz Quantum Cascade Lasers: Novel Resonators and Linewidth Properties

H. Beere, D. Ritchie, R. Green, 2007, 2007 Conference on Lasers and Electro-Optics (CLEO).

Homogeneous quantum cascade lasers operating as terahertz frequency combs over their entire operational regime

H. Beere, M. Vitiello, D. Ritchie, 2020, Frontiers in Optics and Photonics.

Terahertz Quantum Cascade Devices: From Intersubband Transition to Microcavity Laser

C. Sirtori, H. Beere, D. Ritchie, 2008, IEEE Journal of Selected Topics in Quantum Electronics.

Theory of the in-plane photoelectric effect in two-dimensional electron systems

H. Beere, W. Michailow, D. Ritchie, 2021, Physical Review B.

Single-electron transfer between double quantum dots defined by surface acoustic waves

H. Beere, D. Ritchie, M. Pepper, 2006 .

Noninvasive detection of the evolution of the charge states of a double dot system

H. Beere, D. Ritchie, A. Rushforth, 2004, cond-mat/0402042.

Ultrafast modulation of a THz metamaterial/graphene array integrated device

H. Beere, D. Ritchie, S. Hofmann, 2022, Applied Physics Letters.

Spectral characterization of terahertz quantum cascade lasers by heterodyne and homodyne mixing

H. Beere, D. Ritchie, S. Pavlov, 2007, 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics.

High Resolution Gas Phase Spectroscopy with a Quantum Cascade Laser at 2.5 THz

H. Beere, D. Ritchie, S. Pavlov, 2006, 2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics.

Microwave power generation by magnetic superlattices

H. Beere, D. Ritchie, M. Henini, 2011 .

Material parameter extraction in THz-TDS using a converging beam transfer function

G. Daniell, H. Beere, D. Ritchie, 2010, 35th International Conference on Infrared, Millimeter, and Terahertz Waves.

Homodyne detection up to 2 THz using continuous wave laser diodes

H. Beere, D. Ritchie, I. Gregory, 2005, 2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics.

Landau level spin diode in a GaAs two dimensional hole system

K. D. Gupta, H. Beere, D. Ritchie, 2014, 1406.3883.

Linear non-hysteretic gating of a very high density 2DEG in an undoped metal–semiconductor–metal sandwich structure

K. D. Gupta, H. Beere, D. Ritchie, 2011, 1111.4310.

Phase-locking of a 2.7 terahertz quantum cascade laser to a mode-locked Er-fiber laser

C. Sirtori, H. Beere, D. Ritchie, 2010, 2010 IEEE International Frequency Control Symposium.

All-optical wavelength shifting in a semiconductor laser using resonant nonlinearities

C. Sirtori, H. Beere, D. Ritchie, 2012, Nature Photonics.

Longitudinal computer-generated holograms for digital frequency control in electronically tunable terahertz lasers

H. Beere, D. Ritchie, S. Chakraborty, 2012, 1205.3042.

Terahertz receivers development for astronomy and security applications

M. Siegel, H. Beere, D. Ritchie, 2007, 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics.

Low-threshold quantum-cascade lasers at 3.5 THz (lambda = 85 microm).

E. Linfield, H. Beere, D. Ritchie, 2003, Optics letters.

Terahertz interminiband emission and magneto-transport measurements from a quantum cascade chirped superlattice

E. Linfield, M. Beck, J. Faist, 2002 .

Photovoltage detection of Damon–Eshbach and dipolar edge spin waves of nanomagnets with two-dimensional electron gas system

H. Beere, D. Ritchie, A. Nogaret, 2018, Japanese Journal of Applied Physics.

Fabrication of terahertz holograms

E. Walsby, D. Cumming, H. Beere, 2007 .

Electron Assisted Variable Range Hopping in Strongly Correlated 2D Electron Systems

E. Linfield, H. Beere, D. Ritchie, 2002 .

Terahertz Metamaterial Optoelectronic Modulators With GHz Reconfiguration Speed

H. Beere, D. Ritchie, S. Hofmann, 2022, IEEE Transactions on Terahertz Science and Technology.

Composition measurement of epitaxial ScxGa1−xN films

H. Beere, R. Palgrave, E. Alves, 2016 .

A complete laboratory for transport studies of electron-hole interactions in GaAs/AlGaAs systems

H. Beere, J. Llandro, I. Farrer, 2017 .

Density-dependent instabilities in correlated two?dimensional electron systems

H. Beere, D. Ritchie, M. Pepper, 2004 .

Density-dependent thermopower oscillations in mesoscopic two-dimensional electron gases

H. Beere, D. Ritchie, M. Pepper, 2014, 1408.0730.

An External Cavity 4.7 Terahertz Quantum Cascade Laser

H. Beere, D. Ritchie, R. Green, 2007 .

Using terahertz cascade lasers for determination of optical losses in active medium of silicon intracenter lasers

H. Beere, D. Ritchie, H. Riemann, 2010, 2010 2nd IEEE International Workshop Thz Radiation: Basic Research and Applications.

Anti-bunched photons from a lateral light-emitting diode

H. Beere, D. Ritchie, T. Lunghi, 2011, 1109.4757.

An Antenna-Coupled Dual-Gated Electron Channel as Direct Detector of 2 THz Radiation

H. Beere, D. Ritchie, R. Degl’Innocenti, 2020, 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).

External cavity terahertz quantum cascade laser with a metamaterial/graphene optoelectronic mirror

E. Linfield, D. Indjin, H. Beere, 2020, Applied Physics Letters.

Surface plasmon photonic structures in terahertz quantum cascade lasers.

H. Beere, D. Ritchie, R. Green, 2006, Optics express.

Self-mixing interferometry and near-field nanoscopy in quantum cascade random lasers at terahertz frequencies

Eva A. A. Pogna, H. Beere, D. Ritchie, 2021 .

Surface acoustic wave-driven planar light-emitting device

Cambridge, Pisa, Italy., 2004, cond-mat/0403357.

Quantized charge pumping through a quantum dot by surface acoustic waves

H. Beere, D. Ritchie, F. Ahlers, 2003, cond-mat/0312304.

Distinguishing impurity concentrations in GaAs and AlGaAs, using very shallow undoped heterostructures

K. D. Gupta, H. Beere, D. Ritchie, 2010, 1007.1019.

Resistively detected microwave absorption by planar spin oscillators

H. Beere, D. Ritchie, N. Lambert, 2006 .

3D imaging with a terahertz quantum cascade laser

H. Beere, D. Ritchie, M. Johns, 2005, 2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics.

Research data supporting "Fast terahertz imaging using a quantum cascade amplifier"

H. Beere, D. Ritchie, R. Degl’Innocenti, 2015 .

Continuous-Wave Reflection Imaging Using Optical Feedback Interferometry in Terahertz and Mid-Infrared Quantum Cascade Lasers

G. Scamarcio, D. A. Ritchie, H. E. Beere, 2014, IEEE Transactions on Terahertz Science and Technology.

Jain-Kivelson-type resonance as a noninvasive probe of screening in the quantum Hall regime

David A. Ritchie, G. A. C. Jones, Harvey E. Beere, 2005, Microelectron. J..

Anomalous critical fields in quantum critical superconductors

H. Beere, D. Ritchie, P. See, 2014, Nature Communications.

Controlled spatial separation of spins and coherent dynamics in spin-orbit-coupled nanostructures

H. Beere, D. Ritchie, M. Pepper, 2017, Nature Communications.

Phonon-drag thermopower of lateral superlattices: the role of anisotropic scattering

H. Beere, D. Ritchie, A. Nogaret, 2003 .

Phonon-Drag Thermopower of the Periodically Modulated Two Dimensional Electron Gas

H. Beere, D. Ritchie, S. Bending, 2002 .

Enhancement of edge channel transport by a low frequency irradiation

H. Beere, D. Ritchie, I. Farrer, 2011, 1102.2314.

Microwave-induced forward scattering and Luttinger liquid interferences in magnetically confined quantum wires

H. Beere, D. Ritchie, C. Phillips, 2008 .

Ultrabroadband terahertz radiation from low-temperature-grown GaAs photoconductive emitters

Prashanth C. Upadhya, Edmund H. Linfield, Harvey E. Beere, 2003 .

THz carrier dynamics and magnetotransport study of topological surface states in thin film Bi2Se3

David A. Ritchie, Harvey E. Beere, Varun S. Kamboj, 2018, OPTO.

Quantum transport in In0.75Ga0.25As quantum wires

H. Beere, D. Ritchie, M. Pepper, 2008 .

Low Temperature Transport in Undoped Mesoscopic Structures

K. D. Gupta, H. Beere, D. Ritchie, 2008, 0807.2778.

Molecular beam epitaxy of high mobility In0.75Ga0.25As for electron spin transport applications

H. Beere, D. Ritchie, M. Pepper, 2009 .

Photoresistance oscillations of magnetic quantum wires

H. Beere, D. Ritchie, P. Saraiva, 2008 .

POINT CONTACT SPECTROSCOPY OF MAGNETIC EDGE STATES

H. Beere, D. Ritchie, N. Lambert, 2007 .

Standing waves of magnetic edge states in mesoscopic magnetic rings

C. Marrows, B. Hickey, H. Beere, 2004 .

Submonolayer growth of Fe on a GaAs (100) -2×6 reconstructed surface

S. J. Steinmuller, H. Beere, D. Ritchie, 2005 .

Imprinted diffractive optics for terahertz radiation.

E. Walsby, D. Cumming, H. Beere, 2007, Optics letters.

Quantum Dot Resonant Tunneling Diode for Telecommunication Wavelength Single Photon Detection

Andrew J. Shields, David A. Ritchie, Harvey E. Beere, 2007 .

Switching between attractive and repulsive Coulomb-interaction-mediated drag in an ambipolar GaAs/AlGaAs bilayer device

K. D. Gupta, H. Beere, D. Ritchie, 2015, 1511.08701.

A complete laboratory for transport studies of electron-hole interactions in GaAs/AlGaAs ambipolar bilayers

H. Beere, D. Ritchie, J. Llandro, 2016, 1611.08816.

Versatile and active THz wave polarization modulators using metamaterial/graphene resonators

H. Beere, D. Ritchie, S. Hofmann, 2023, Frontiers in Nanotechnology.

The effect of metal‐rich growth conditions on the microstructure of ScxGa1−xN films grown using molecular beam epitaxy

H. Beere, E. Alves, N. Barradas, 2015 .

Electrically pumped photonic-crystal terahertz lasers controlled by boundary conditions

R. Colombelli, W. Maineult, S. Barbieri, 2009, Nature.

Systematic Study of Ferromagnetism in CrxSb2−xTe3 Topological Insulator Thin Films using Electrical and Optical Techniques

H. Beere, D. Ritchie, C. Barnes, 2018, Scientific Reports.

Effects of biased and unbiased illuminations on two-dimensional electron gases in dopant-free GaAs/AlGaAs

H. Beere, J. Baugh, M. Pepper, 2022, Physical Review B.

Cryogenic on-chip multiplexer for the study of quantum transport in 256 split-gate devices

M. J. Kelly, D. A. Ritchie, G. A. C. Jones, 2013, 1306.4229.

Demonstration and characterization of an ambipolar high mobility transistor in an undoped GaAs/AlGaAs quantum well

K. D. Gupta, H. Beere, D. Ritchie, 2013 .

Giant Magnetoresistance in a Chemical Vapor Deposition Graphene Constriction

M. Kelly, H. Beere, D. Ritchie, 2022, ACS nano.

Temperature dependence of the ferromagnetic response in CrxSb2-xTe3 topological insulator thin films investigated using terahertz spectroscopy and magneto-transport

Adrian M. Ionescu, David A. Ritchie, Harvey E. Beere, 2019, OPTO.

Electrically Controllable Kondo Correlation in Spin-Orbit-Coupled Quantum Point Contacts.

H. Beere, Yueh-Nan Chen, I. Farrer, 2022, Physical review letters.

Evidence of Novel Quasiparticles in a Strongly Interacting Two-Dimensional Electron System: Giant Thermopower and Metallic Behaviour

H. Beere, M. Pepper, V. Narayan, 2012, 1208.2285.

Optimisation of Quantum Dot Resonant Tunnelling Diodes for Fibre Wavelength Detection

H. Beere, D. Ritchie, A. Shields, 2006 .

Possible evidence of a spontaneous spin polarization in mesoscopic two-dimensional electron systems.

H. Beere, D. Ritchie, M. Pepper, 2003, Physical review letters.

Characterization of a quantum cascade laser as local oscillator in a heterodyne receiver at 2.5 THz

A. Tredicucci, E. Linfield, H. Beere, 2005, 2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics.

External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices

S J Kindness, H. Beere, D. Ritchie, 2017, Scientific Reports.

Direct intensity sampling of a modelocked terahertz quantum cascade laser

Juliette Mangeney, David A. Ritchie, Harvey E. Beere, 2012 .

Injection-locking of terahertz quantum cascade lasers up to 35GHz via RF amplitude modulation

I. Sagnes, P. Filloux, P. Gellie, 2010, 35th International Conference on Infrared, Millimeter, and Terahertz Waves.

Electron-lattice coupling in bound-to-continuum THz quantum-cascade lasers

Vincenzo Spagnolo, Gaetano Scamarcio, David A. Ritchie, 2006 .

Electronic and lattice temperatures in bound-to-continuum terahertz quantum cascade lasers

H. Beere, D. Ritchie, R. Green, 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

Application of terahertz quantum-cascade lasers to semiconductor cyclotron resonance.

Edmund Linfield, Giles Davies, Frank K Tittel, 2004, Optics letters.

Quasibound states in semiconductor quantum well structures

H. Page, H. Beere, S. Rihani, 2010 .

A THz quantum cascade detector in a strong perpendicular magnetic field

J. Faist, G. Scalari, H. Beere, 2006 .

High mobility In0.75Ga0.25As quantum wells in an InAs phonon lattice

H. Beere, I. Farrer, S. Holmes, 2018, Journal of physics. Condensed matter : an Institute of Physics journal.

MBE growth and patterned backgating of electron–hole bilayer structures

K. D. Gupta, H. Beere, D. Ritchie, 2009 .

Fabrication of closely spaced, independently contacted Electron-Hole bilayers in GaAs-AlGaAs heterostructures

K. D. Gupta, H. Beere, M. Pepper, 2005, 0807.0106.

Independently contacted electron–hole gas heterostructures fabricated with focused ion beam doping during molecular beam epitaxial growth

H. Beere, D. Ritchie, P. Sazio, 1999 .

Focused ion molecular-beam epitaxy – a novel approach to 3D device fabrication using simultaneous p- and n-type doping

E. Linfield, H. Beere, D. Ritchie, 1999 .

Active Control of Electromagnetically Induced Transparency in a Terahertz Metamaterial Array with Graphene for Continuous Resonance Frequency Tuning

David A. Ritchie, Stephan Hofmann, Harvey E. Beere, 2018, Advanced Optical Materials.

THz saturable absorption in turbostratic multilayer graphene on silicon carbide.

David A. Ritchie, Harvey E. Beere, Miriam S. Vitiello, 2015, Optics express.

Design and simulation of a THz QCL based on Γ―X depopulation mechanism

H. Page, H. Beere, D. Ritchie, 2009 .

Towards the ground state of an electron-hole bilayer

K. D. Gupta, H. Beere, D. Ritchie, 2010 .

Closely spaced, independently contacted electron hole bilayers in GaAs AlGaAs heterostructures

K. D. Gupta, H. Beere, D. Ritchie, 2006 .

THz QCL-Based Cryogen-Free Spectrometer for in Situ Trace Gas Sensing

David A. Ritchie, Harvey E. Beere, Miriam S. Vitiello, 2013, Sensors.

Phase-locking to a free-space terahertz comb for metrological-grade terahertz lasers

H. Beere, D. Ritchie, M. Vitiello, 2012, Nature Communications.

Phase-locking of a 2.7-THz quantum cascade laser to a mode-locked erbium-doped fibre laser

Carlo Sirtori, David A. Ritchie, Lu Ding, 2010 .

Terahertz magnetoconductivity of excitons and electrons in quantum cascade structures

David A. Ritchie, Harvey E. Beere, Michael B. Johnston, 2008 .

Real-Time Measure of the Lattice Temperature of a Semiconductor Heterostructure Laser via an On-Chip Integrated Graphene Thermometer

H. Beere, D. Ritchie, M. Vitiello, 2023, ACS nano.

Photovoltage detection of spin excitation of a ferromagnetic stripe and disk at low temperature

H. Beere, D. Ritchie, A. Nogaret, 2020, Japanese Journal of Applied Physics.

Photovoltage Spectroscopy of Dipolar Spin Waves in Dy Micromagnets

H. Beere, D. Ritchie, A. Nogaret, 2014 .

All-integrated terahertz modulators

David A. Ritchie, Stephen J. Kindness, Harvey E. Beere, 2017 .

Frequency-tunable continuous-wave random lasers at terahertz frequencies

A. Davies, E. Linfield, H. Beere, 2019, Light, science & applications.

Continuous-wave highly-efficient low-divergence terahertz wire lasers

Fabrizio Castellano, Simone Biasco, Katia Garrasi, 2018, Nature Communications.

Probing quantum efficiency by laser-induced hot-electron cooling

Gaetano Scamarcio, David A. Ritchie, Jérôme Faist, 2009 .

Subband electronic temperatures and electron-lattice energy relaxation in terahertz quantum cascade lasers with different conduction band offsets

Vincenzo Spagnolo, Gaetano Scamarcio, Carlo Sirtori, 2006 .

Thermal properties of THz quantum cascade lasers based on different optical waveguide configurations

Vincenzo Spagnolo, Gaetano Scamarcio, Carlo Sirtori, 2006 .

Fast Room-Temperature Detection of Terahertz Quantum Cascade Lasers with Graphene-Loaded Bow-Tie Plasmonic Antenna Arrays

H. Beere, D. Ritchie, S. Hofmann, 2016 .

Low-bias gate tunable terahertz plasmonic signatures in chemical vapour deposited graphene of varying grain size

Yuan Ren, David A. Ritchie, David S. Jessop, 2016, SPIE OPTO.

Intrinsic terahertz plasmon signatures in chemical vapour deposited graphene

David A. Ritchie, Juraj Sibik, Piran R. Kidambi, 2013 .

Indirect Modulation of a Terahertz Quantum Cascade Laser Using Gate Tunable Graphene

D. A. Ritchie, H. E. Beere, J. A. Zeitler, 2012, IEEE Photonics Journal.

Electric field sampling of modelocked pulses from a quantum cascade laser.

Jérôme Tignon, H. Beere, D. Ritchie, 2013, Optics express.

Microwave modulation of terahertz quantum cascade lasers: a transmission-line approach

C. Sirtori, H. Beere, D. Ritchie, 2010 .

Gain recovery dynamics of a terahertz quantum cascade laser

H. Beere, D. Ritchie, R. Green, 2009 .

2.9THz quantum cascade lasers operating up to 70K in continuous wave

Edmund H. Linfield, Harvey E. Beere, Stefano Barbieri, 2004 .

Self‐Induced Mode‐Locking in Electrically Pumped Far‐Infrared Random Lasers

Eva A. A. Pogna, H. Beere, D. Ritchie, 2023, Advanced science.

Spatial coherence of electrically pumped random terahertz lasers

Eva A. A. Pogna, H. Beere, M. Vitiello, 2021, Photonics Research.

Terahertz Near-field Nanoscopy Based on Self-mixing Interferometry with Quantum Cascade Resonators

Eva A. A. Pogna, H. Beere, D. Ritchie, 2021, 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).

Highly efficient surface-emitting semiconductor lasers exploiting quasi-crystalline distributed feedback photonic patterns

Andrea Ciavatti, David Ritchie, Simone Biasco, 2020, Light, science & applications.

Aperiodic photonic architectures for high-power distributed feedback THz quantum cascade lasers

David A. Ritchie, A. Giles Davies, Miriam S. Vitiello, 2019, Optical Engineering + Applications.

Tuning a distributed feedback laser with a coupled microcavity.

Fabio Beltram, Lukas Mahler, Alessandro Tredicucci, 2010, Optics express.

High-power surface emission from terahertz distributed feedback lasers with a dual-slit unit cell

David A. Ritchie, Jérôme Faist, Harvey E. Beere, 2010 .

Terahertz imaging with a quantum cascade laser and amorphous-silicon microbolometer array

F. Simoens, T. Durand, J. Meilhan, 2009, Security + Defence.

Dipolar spin waves of lateral magnetic superlattices

H. Beere, D. Ritchie, P. Saraiva, 2010 .

Excitation-density-dependent generation of broadband terahertz radiation in an asymmetrically excited photoconductive antenna.

Andrew Burnett, Wenhui Fan, John Cunningham, 2007, Optics letters.

Terahertz generation from coherent optical phonons in a biased GaAs photoconductive emitter

Prashanth C. Upadhya, Edmund H. Linfield, Harvey E. Beere, 2004 .

Temperature evolution of topological surface states in Bi2Se3 thin films studied using terahertz spectroscopy

David A. Ritchie, Harvey E. Beere, Varun S. Kamboj, 2017, OPTO.

Terahertz conductivity of magnetoexcitons and electrons in semiconductor nanostructures

I. M. Tiginyanu, J. Faist, D. A. Ritchie, 2009, OPTO.

Unconventional metallicity and giant thermopower in a strongly interacting two-dimensional electron system

H. Beere, D. Ritchie, M. Pepper, 2012, 1206.1549.

Modes in silver-iodide-lined hollow metallic waveguides mapped by terahertz near-field time-domain microscopy

H. Beere, D. Ritchie, J. Harrington, 2013 .

Integrated piezoresistive sensors for atomic force-guided scanning Hall probe microscopy

David A. Ritchie, Mohamed Henini, Harvey E. Beere, 2003 .

Vertically emitting microdisk lasers

A. Tredicucci, J. Faist, C. Walther, 2008, 2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science.

Intrinsic stability of quantum cascade lasers against optical feedback.

M Brambilla, G Scamarcio, H. Beere, 2013, Optics express.

Hyperuniform disordered terahertz quantum cascade laser

A. Tredicucci, D. A. Ritchie, A. Pitanti, 2016, Scientific Reports.

Hollow metallic waveguides integrated with terahertz quantum cascade lasers.

O. Mitrofanov, D. A. Ritchie, H. E. Beere, 2014, Optics express.

Frequency tunability and mode switching of 2.5 THz quantum cascade lasers

H. Beere, D. Ritchie, R. Green, 2008, 2008 International Workshop "THz Radiation: Basic Research and Applications".

All-semiconductor room-temperature terahertz time domain spectrometer.

Ian Farrer, Stephen Elsmere, Rakchanok Rungsawang, 2008, Optics letters.

Linewidth enhancement factor of terahertz quantum cascade lasers

Guido Giuliani, David A. Ritchie, Harvey E. Beere, 2008 .

Graphene-loaded metal wire grating for deep and broadband THz modulation in total internal reflection geometry

Zhengchun Peng, David A. Ritchie, Danni Chen, 2018, Photonics Research.

Amplitude stabilization and active control of a terahertz quantum cascade laser with a graphene loaded split-ring-resonator array

David A. Ritchie, Yunpeng Ren, Stephan Hofmann, 2018 .

Single mode terahertz quantum cascade amplifier

Yuan Ren, David A. Ritchie, Yash D. Shah, 2014 .

Tunable terahertz quantum cascade lasers with an external cavity

David A. Ritchie, Joel M. Hensley, Harvey E. Beere, 2007 .

Discrete mode tuning in terahertz quantum cascade lasers.

Owen Marshall, David Ritchie, H. Beere, 2012, Optics express.

Spectral engineering of terahertz quantum cascade lasers using focused ion beam etched photonic lattices

E. Linfield, H. Beere, D. Ritchie, 2006 .

High-performance operation of single-mode terahertz quantum cascade lasers with metallic gratings

David A. Ritchie, Edmund H. Linfield, Harvey E. Beere, 2005 .

Spectral behavior of a terahertz quantum-cascade laser.

Juan Montoya, H. Beere, D. Ritchie, 2009, Optics express.

Texture and terahertz analysis of YBa2Cu3O7 grown onto LaAlO3 by the chemical solution deposition technique

H. Beere, V. S. Kamboj, A. M. Osorio Anaya, 2021, Heat Treatment and Surface Engineering.

Dynamic localization of two-dimensional electrons at mesoscopic length scales

H. Beere, M. Pepper, A. Ghosh, 2004, cond-mat/0403560.

Magnetic Field Induced Instabilities In Localized Two-Dimensional Electron Systems

H. Beere, D. Ritchie, M. Pepper, 2009 .

Quantisation of hopping magnetoresistance prefactor in strongly correlated two-dimensional electron systems

H. Beere, D. Ritchie, M. Pepper, 2007, 0707.3543.

The effect of pulse-modulated surface acoustic waves on acoustoelectric current quantization

H. Beere, D. Ritchie, M. Pepper, 2006 .

Imaging fractal conductance fluctuations and scarred wave functions in a quantum billiard.

H. Beere, D. Ritchie, I. Farrer, 2003, Physical review letters.

High-Throughput Electrical Characterization of Nanomaterials from Room to Cryogenic Temperatures.

M. Kelly, H. Beere, D. Ritchie, 2020, ACS nano.

A Terahertz Chiral Metamaterial Modulator

H. Beere, D. Ritchie, S. Hofmann, 2020, Advanced Optical Materials.

Metamaterial/graphene amplitude and frequency modulators for the active control of terahertz quantum cascade lasers

David A. Ritchie, Stephan Hofmann, Binbin Wei, 2018, Optical Engineering + Applications.

Graphene Conductivity Mapping using Terahertz Time-Domain Reflection Spectroscopy

H. Beere, D. Ritchie, S. Hofmann, 2018, 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).

Contactless graphene conductivity mapping on a wide range of substrates with terahertz time-domain reflection spectroscopy

H. Beere, D. Ritchie, S. Hofmann, 2017, Scientific Reports.

Erasable electrostatic lithography

H. Beere, D. Ritchie, I. Farrer, 2004 .

Kelvin probe microscopy to image and characterise erasable electrostatic lithography

Ian Farrer, David A. Ritchie, Harvey E. Beere, 2006 .

Gated-charge force microscopy for imaging a surface-acoustic-wave-induced charge in a depleted one-dimensional channel

H. Beere, D. Ritchie, C. Barnes, 2008 .

Spatial mapping and statistical reproducibility of an array of 256 one-dimensional quantum wires

Michael J. Kelly, David A. Ritchie, Harvey E. Beere, 2015 .

Manufacturability of split-gate transistor devices—initial results

Ian Farrer, Harvey E. Beere, Michael J. Kelly, 2006 .

Active Terahertz Modulator and Slow Light Metamaterial Devices with Hybrid Graphene–Superconductor Photonic Integrated Circuits

M. Kelly, H. Beere, D. Ritchie, 2021, Nanomaterials.

Terahertz near-field imaging using subwavelength plasmonic apertures and a quantum cascade laser source.

J. M. Chamberlain, H. Beere, D. Ritchie, 2011, Optics letters.

Highly efficient surface-emitting semiconductor lasers exploiting quasi-crystalline distributed feedback photonic patterns

E. Linfield, H. Beere, D. Ritchie, 2020, Light, science & applications.

Nuclear Spin Coherence in a Quantum Wire

H. Beere, D. Ritchie, M. Pepper, 2009, 0906.3970.

Effects of biased and unbiased illuminations on dopant-free GaAs/AlGaAs 2DEGs

India., Canada., London, 2020, 2012.14370.

Generation and Detection of Terahertz Radiation

H. Beere, D. Ritchie, J. Freeman, 2012 .

Two-trap model for carrier lifetime and resistivity behavior in partially annealed GaAs grown at low temperature

H. Beere, I. Gregory, M. Evans, 2006 .

Frequency Characterization of a Terahertz Quantum-Cascade Laser

David A. Ritchie, Harvey E. Beere, Lukas Mahler, 2007, IEEE Transactions on Instrumentation and Measurement.

Advances in THz quantum cascade lasers: fulfilling the application potential

Alessandro Tredicucci, Ruedeger Koehler, Harvey E. Beere, 2005, SPIE OPTO.

Broadband photonic control for dual-mode terahertz laser emission

H. Beere, D. Ritchie, S. Chakraborty, 2013 .

Electrically switchable emission in terahertz quantum cascade lasers.

H. Beere, D. Ritchie, Harvey E Beere, 2008, Optics express.

Repetition-frequency-tunable mode-locked surface emitting semiconductor laser between 2.78 and 7.87 GHz.

H. Beere, D. Ritchie, A. Tropper, 2011, Optics express.

THz quantum cascade lasers based on a hyperuniform design

A. Tredicucci, D. A. Ritchie, H. E. Beere, 2015, SPIE OPTO.

Improved Tuning Fork for Terahertz Quartz-Enhanced Photoacoustic Spectroscopy

Frank K. Tittel, Vincenzo Spagnolo, Gaetano Scamarcio, 2016, Sensors.

Active Polarization Modulation of Terahertz Radiation Using Metamaterial/Graphene-Based Optoelectronic Devices

H. Beere, D. Ritchie, S. Hofmann, 2022, 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).

Graphene-based External Optoelectronic Terahertz Modulators for High Speed Wireless Communications

H. Beere, D. Ritchie, S. Hofmann, 2021, UK, Europe, China Millimeter Waves and THz Technology Workshop.

Active metamaterial polarization modulators for the Terahertz frequency range

H. Beere, D. Ritchie, S. Hofmann, 2020, Journal of Physics: Conference Series.

Double Layer Active Terahertz Chiral Metamaterial/graphene Modulators

H. Beere, D. Ritchie, S. Hofmann, 2020, Conference on Lasers and Electro-Optics.

Fast Modulation of Terahertz Quantum Cascade Lasers Using Graphene Loaded Plasmonic Antennas

Yuan Ren, David A. Ritchie, Stephan Hofmann, 2016 .

Research data supporting "Graphene based plasmonic terahertz amplitude modulator operating above 100 MHz"

Yuan Ren, David A. Ritchie, Stephan Hofmann, 2016 .

Metamaterial/graphene active terahertz modulators

H. Beere, D. Ritchie, S. Hofmann, 2019, 2019 IEEE MTT-S International Wireless Symposium (IWS).

Terahertz probe of individual subwavelength objects in a water environment

H. Beere, D. Ritchie, M. Cecchini, 2014 .

Stabilization of single-electron pumps by high magnetic fields.

H. Beere, D. Ritchie, P. See, 2011, 1107.4560.

Terahertz emission by diffusion of carriers and metal-mask dipole inhibition of radiation.

G. Daniell, H. Beere, D. Ritchie, 2011, Optics express.

Resistively detected nuclear magnetic resonance in n- and p-type GaAs quantum point contacts.

A D Wieck, H. Beere, D. Ritchie, 2011, Nano letters.

A hybrid plasmonic waveguide terahertz quantum cascade laser

H. Beere, D. Ritchie, R. Degl’Innocenti, 2015, 2015 Conference on Lasers and Electro-Optics (CLEO).

Terahertz Nanoscopy of Plasmonic Resonances with a Quantum Cascade Laser

David A. Ritchie, Stephan Hofmann, Harvey E. Beere, 2017 .

Bolometric detection of terahertz quantum cascade laser radiation with graphene-plasmonic antenna arrays

David A. Ritchie, Kenichi Nakanishi, Stephan Hofmann, 2017 .

THz nanoscopy of plasmonic resonances with a quantum cascade laser

Oleg, H. Beere, D. Ritchie, 2017 .

Continuous wave operation of a superlattice quantum cascade laser emitting at 2 THz.

Carlo Sirtori, David Ritchie, Stefano Barbieri, 2006, Optics express.

Correction to Fast Modulation of Terahertz Quantum Cascade Lasers Using Graphene Loaded Plasmonic Antennas

H. Beere, D. Ritchie, S. Hofmann, 2016 .

Fast terahertz optoelectronic amplitude modulator based on plasmonic metamaterial antenna arrays and graphene

Yuan Ren, David A. Ritchie, David S. Jessop, 2016, SPIE OPTO.

Graphene-based optical modulator realized in metamaterial split-ring resonators operating in the THz frequency range

David A. Ritchie, David S. Jessop, Yash D. Shah, 2014, Photonics West - Optoelectronic Materials and Devices.

Terahertz optical modulator based on metamaterial splitring resonators and graphene

H. Beere, D. Ritchie, S. Hofmann, 2014, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

Terahertz optical modulator based on metamaterial split-ring resonators and graphene

David A. Ritchie, Riccardo Degl’Innocenti, David S. Jessop, 2014 .

Terahertz Polarisation Modulator by Electronic Control of Graphene Loaded Chiral Metamaterial Device

H. Beere, D. Ritchie, S. Hofmann, 2019, 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).

Direct measurement of the camel-back energy surface in AlAs and its evolution in an electric field

H. Beere, D. Ritchie, G. Hill, 2004 .

Triggering InAs/GaAs Quantum Dot nucleation and growth rate determination by in-situ modulation of surface energy

H. Beere, D. Ritchie, P. Spencer, 2019, 1906.05842.

THz and sub‐THz quantum cascade lasers

David A. Ritchie, Jérôme Faist, Harvey E. Beere, 2009 .

Real Time 3-D Patterned Crystal Growth of GaAs Using a Low Energy Focused Ion Beam and Molecular Beam Epitaxy

G. W. Smith, H. Beere, D. Ritchie, 1996 .

Selective area epitaxy of GaAs using very low energy Ga+ focused ion beam deposition combined with molecular beam epitaxial growth

H. Beere, D. Ritchie, G. Jones, 1997 .

Terahertz emission from quantum cascade lasers in the quantum Hall regime: evidence for many body resonances and localization effects.

Edmund Linfield, Giles Davies, Jérôme Faist, 2004, Physical review letters.

Magnetic field in-plane quantization and tuning of population inversion in a THz superlattice quantum cascade laser

E. Linfield, H. Beere, D. Ritchie, 2003 .

Micromachined III-V cantilevers for AFM-tracking scanning Hall probe microscopy

David A. Ritchie, Mohamed Henini, Harvey E. Beere, 2003 .

Terahertz quantum cascade lasers

E. Linfield, M. Beck, G. Scalari, 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

Fast graphene based plasmonic terahertz amplitude modulators

H. Beere, D. Ritchie, S. Hofmann, 2016, Conference on Lasers and Electro-Optics.

Continuous-wave laser operation of a dipole antenna terahertz microresonator

H. Beere, D. Ritchie, M. Vitiello, 2017, Light: Science & Applications.

Terahertz microcavity lasers with subwavelength mode volumes and thresholds in the milliampere range

Carlo Sirtori, David A. Ritchie, Raffaele Colombelli, 2007 .

Systematic Study of Ferromagnetism in CrxSb2−xTe3 Topological Insulator Thin Films using Electrical and Optical Techniques

Thorsten Hesjedal, Angadjit Singh, Satyaprasad P. Senanayak, 2018, Scientific Reports.

Single-mode operation of terahertz quantum cascade lasers with distributed feedback resonators

A. Tredicucci, A. Davies, H. Beere, 2004, Conference on Lasers and Electro-Optics, 2004. (CLEO)..

Population inversion by resonant magnetic confinement in terahertz quantum-cascade lasers

E. Linfield, J. Faist, G. Scalari, 2003 .

High-intensity interminiband terahertz emission from chirped superlattices

E. Linfield, H. Beere, D. Ritchie, 2002 .

High power quantum cascade lasers operating at λ≃87 and 130μm

Giles Davies, Edmund H. Linfield, Jérôme Faist, 2004 .

Distributed Feedback THz Quantum-Cascade Lasers Using Thin Double-Metallic Gratings

H. Beere, D. Ritchie, S. Barbieri, 2008, IEEE Photonics Technology Letters.

Loss-coupled distributed feedback far-infrared quantum cascade lasers

E. Linfield, J. Faist, H. Beere, 2005 .

Electrically switchable, two-color quantum cascade laser emitting at 1.39 and 2.3THz

Jérôme Faist, Harvey E. Beere, David Ritchie, 2006 .

Dual-wavelength THz imaging with quantum cascade lasers

Jérôme Faist, Marcella Giovannini, David A. Ritchie, 2005, SPIE OPTO.

Multi-wavelength operation and vertical emission in THz quantum-cascade lasersa)

Marcella Giovannini, Jérôme Faist, Romuald Houdré, 2007 .

Imaging with THz quantum cascade lasers using a Schottky diode mixer.

David Ritchie, Stefano Barbieri, Jesse Alton, 2005, Optics express.

Fabrication and characterization of GaAs/AlGaAs lateral quantum dot developed by ultrasonic agitation

M. Kelly, H. Beere, I. Farrer, 2008 .

Wide dynamic range terahertz detector pixel for active spectroscopic imaging with quantum cascade lasers

David A. Ritchie, S. Cibella, Guido Torrioli, 2009 .

Linewidth and tuning characteristics of terahertz quantum cascade lasers.

A. Davies, E. Linfield, J. Faist, 2004, Optics letters.

Valence band offsets of ScxGa1−xN/AlN and ScxGa1−xN/GaN heterojunctions

H. Beere, R. Palgrave, I. Farrer, 2016 .

Terahertz transfer onto a telecom optical carrier

S. Barbieri, C. Sirtori, H. Beere, 2007, 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves.

Growth-temperature optimization for low-carrier-density In0.75Ga0.25As-based high electron mobility transistors on InP

H. Beere, D. Ritchie, P. Simmonds, 2007 .

Molecular Spectroscopy with TeraHertz Quantum Cascade Lasers

David A. Ritchie, Heinz-Wilhelm Hübers, Harvey E. Beere, 2007 .

Low threshold THz QC lasers with thin core regions

Carlo Sirtori, David A. Ritchie, Raffaele Colombelli, 2007 .

Heterogeneous THz quantum cascade lasers: Broadband operation

H. Beere, D. Ritchie, S. Dhillon, 2011, 2011 International Conference on Infrared, Millimeter, and Terahertz Waves.

Guiding a terahertz quantum cascade laser into a flexible silver-coated waveguide

David A. Ritchie, James A. Harrington, Harvey E. Beere, 2011 .

Tuning a distributed feedback laser with a coupled microcavity.

H. Beere, D. Ritchie, F. Beltram, 2010, Optics express.

Pulsed terahertz time domain spectroscopy of vertically structured photoconductive antennas

H. Beere, D. Ritchie, M. Evans, 2010 .

4.3 Μm Quantum Cascade Detector in Pixel Configuration References and Links

M. N. Kutty, H. Herzig, Niblack, 2022 .

Bychkov–Rashba dominated band structure in an In0.75Ga0.25As–In0.75Al0.25As device with spin-split carrier densities of <1011 cm−2

H. Beere, D. Ritchie, P. Simmonds, 2008 .

Cylindrical Multimode Waveguides as Focusing Interferometric Systems

H. Beere, W. Michailow, N. Almond, 2023, ACS photonics.

Frequency-tunable continuous-wave random lasers at terahertz frequencies

Simone Biasco, Lianhe Li, A. Davies, 2019, Light: Science & Applications.

Terahertz quantum cascade lasers with quasi-periodic resonators

J. Faist, C. Walther, H. Beere, 2008 .

Achieving 100% amplitude modulation depth in a graphene-based tuneable capacitance metamaterial

H. Beere, R. Degl’Innocenti, S. Kindness, 2023, 2312.16330.

High Peak Power Femtosecond Pulse Passively Mode-Locked Vertical-External-Cavity Surface-Emitting Laser

H. Beere, D. Ritchie, A. Tropper, 2010, IEEE Photonics Technology Letters.

Dual wavelength emission from a terahertz quantum cascade laser

H. Beere, D. Ritchie, S. Dhillon, 2010 .

Differential near-field scanning optical microscopy with THz quantum cascade laser sources.

H. Beere, D. Ritchie, F. Beltram, 2009, Optics express.

The reproducibility and transferability of a THz quantum cascade laser design between two MBE growth manufacturers’ platforms

H. Beere, D. Ritchie, C. Worrall, 2009 .

Tuning the emission frequency of a 2 THz quantum cascade laser by altering the total thickness of the structure

C. Sirtori, H. Beere, D. Ritchie, 2007 .

High power superlattice quantum cascade laser emitting at 2.0 THz

Carlo Sirtori, Harvey E. Beere, David Ritchie, 2006, SPIE OPTO.

Metal-metal terahertz quantum cascade laser with micro-transverse- electromagnetic-horn antenna

Carlo Sirtori, David A. Ritchie, P. Filloux, 2008 .

Opus: University of Bath Online Publication Store Photovoltage Spectroscopy of Dipolar Spin Waves in Dy Micromagnets

H. Beere, D. Ritchie, A. Nogaret, 2022 .

Low-bias terahertz amplitude modulator based on split-ring resonators and graphene.

H. Beere, S. Hofmann, P. Kidambi, 2014, ACS nano.

Theory of the in-plane photoelectric effect in two-dimensional electron systems

H. Beere, W. Michailow, D. Ritchie, 2021, Physical Review B.

Reduced tunnel-barrier height in sub-10 nm Au nanoelectrodes

H. Beere, D. Ritchie, I. Farrer, 2012, 2012 12th IEEE International Conference on Nanotechnology (IEEE-NANO).

Two processing techniques to sandwich a 100 nm GaAs layer between ferromagnetic metallic electrodes

H. Beere, D. Ritchie, Charles G. Smith, 2003 .

Effect of defect saturation on terahertz emission and detection properties of low temperature GaAs photoconductive switches

David A. Ritchie, Michael Pepper, Harvey E. Beere, 2009 .

Terahertz quantum cascade lasers

M. Beck, G. Scalari, H. Beere, 2010, Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences.

Spin-Dependent Transport in Fe/GaAs(100)/Fe Vertical Spin-Valves

H. Beere, D. Ritchie, K. Xia, 2016, Scientific Reports.

Optimum resonant tunnelling injection and influence of doping density on the performance of THz bound-to-continuum cascade lasers

Edmund Linfield, David A. Ritchie, Stefano Barbieri, 2005, SPIE OPTO.

Low-threshold superlattice quantum cascade laser emitting at λ = 103 μm and operating up to 70 K in continuous wave

David A. Ritchie, Edmund H. Linfield, Harvey E. Beere, 2004, SPIE OPTO.

Photoelectric tunable-step terahertz detectors: a study on optimal antenna parameters, speed, and temperature performance

H. Beere, W. Michailow, D. Ritchie, 2024, Nanophotonics.

Molecular Beam Epitaxial Growth of Terahertz Quantum Cascade Lasers

H. Beere, D. Ritchie, 2019, Molecular Beam Epitaxy.

Optoelectronic control of an external cavity quantum cascade laser using a graphene loaded metamaterial array

H. Beere, D. Ritchie, S. Hofmann, 2017, 2017 Conference on Lasers and Electro-Optics (CLEO).

Mechanically robust cylindrical metal terahertz waveguides for cryogenic applications

David A. Ritchie, James A. Harrington, Jeffrey E. Melzer, 2017, OPTO.

Investigation of hollow cylindrical metal terahertz waveguides suitable for cryogenic environments.

H. Beere, J. Melzer, R. Degl’Innocenti, 2016, Optics express.

Integrating THz quantum cascade lasers with flexible dielectric-lined hollow metallic waveguides: Moving beyond free space optics

H. Beere, J. Melzer, R. Degl’Innocenti, 2016, 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).

Self-mixing imaging using a terahertz quantum cascade amplifier

H. Beere, D. Ritchie, R. Degl’Innocenti, 2015, 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).

Efficient coupling of double-metal terahertz quantum cascade lasers to flexible dielectric-lined hollow metallic waveguides.

H. Beere, J. Melzer, D. S. Jessop, 2015, Optics express.

High order optical sideband generation with Terahertz quantum cascade lasers

A. Davies, E. Linfield, C. Sirtori, 2013, 2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).

THz quantum cascade laser-based quartz enhanced photo-acoustic sensor

H. Beere, D. Ritchie, G. Scamarcio, 2013, 2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).

Stable single-mode operation of surface-emitting terahertz lasers with graded photonic heterostructure resonators

David A. Ritchie, Raffaele Colombelli, Harvey E. Beere, 2013 .

Reversible mode switching in Y-coupled terahertz lasers

H. Beere, D. Ritchie, S. Chakraborty, 2013, 1303.1664.

Phase-locking of surface-emitting THz quantum cascade laser arrays

David A. Ritchie, Edmund H. Linfield, A. Giles Davies, 2013, Photonics West - Optoelectronic Materials and Devices.

Optical wavelength shifting using resonant non-linearities in THz quantum cascade lasers

C. Sirtori, H. Beere, D. Ritchie, 2012, 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves.

Mode-locking of a terahertz laser by direct phase synchronization.

H. Beere, S. Dhillon, N. Jukam, 2012, Optics express.

Monolithically integrated Bragg reflectors to improve on the emitted power from metal-metal THz quantum cascade lasers

H. Beere, D. Ritchie, J. Freeman, 2011, 2011 International Conference on Infrared, Millimeter, and Terahertz Waves.

Continuous-wave operation of 2.7 THz photonic crystal quantum cascade lasers

H. Beere, D. Ritchie, F. Julien, 2010 .

Superconducting microbolometer with microsecond time constant coupled to quantum cascade lasers

H. Beere, D. Ritchie, R. Leoni, 2010, CLEO/QELS: 2010 Laser Science to Photonic Applications.

Resonant tuning fork detector for THz radiation.

W. Schade, H. Beere, D. Ritchie, 2009, Optics express.

Distributed feedback ring resonators for vertically emitting terahertz quantum cascade lasers

J. Faist, M. Amanti, C. Walther, 2009, CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference.

Mid/far-infrared semiconductor devices exploiting plasmonic effects

Gilles Patriarche, Carlo Sirtori, Grégoire Beaudoin, 2009, OPTO.

Surface-emitting photonic crystal terahertz quantum cascade lasers

H. Beere, D. Ritchie, J. Freeman, 2008 .

THz quantum cascade designs for optimized injection

David A. Ritchie, Harvey E. Beere, A. Tredicucci, 2008 .

Frequency Manipulation of THz Bound-to-Continuum Quantum-Cascade Lasers

H. Beere, D. Ritchie, J. Alton, 2008, IEEE Photonics Technology Letters.

Linewidth enhancement factor of a THz quantum cascade laser

H. Beere, D. Ritchie, R. Green, 2007, 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics.

A 1 THz quantum cascade laser in strong magnetic field

J. Faist, G. Scalari, C. Walther, 2007, 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference.

THz radiation transfer onto a telecom optical carrier

C. Sirtori, H. Beere, D. Ritchie, 2007, 2007 Conference on Lasers and Electro-Optics (CLEO).

High performance THz quantum cascade laser with different optical waveguide configurations

Vincenzo Spagnolo, Gaetano Scamarcio, Carlo Sirtori, 2007, SPIE OPTO.

Modal perturbation of terahertz quantum cascade lasers

A. Davies, E. Linfield, H. Beere, 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

2.8 THz heterodyne receiver based on a surface plasmon quantum cascade laser and a hot electron bolometer mixer

David A. Ritchie, J. R. Gao, T. M. Klapwijk, 2006 .

Terahertz quantum cascade laser as local oscillator in a heterodyne receiver.

David A. Ritchie, Edmund H. Linfield, Heinz-Wilhelm Hübers, 2005, Optics express.

Low threshold (I/sub th/<20mA) buried 2.9 THz quantum cascade lasers using a double metal scheme

E. Linfield, C. Sirtori, H. Beere, 2005, (CLEO). Conference on Lasers and Electro-Optics, 2005..

Buried heterostructure 2.9-THz quantum cascade lasers operating up to 77K in continuous wave

Carlo Sirtori, Michel Calligaro, David A. Ritchie, 2005, SPIE OPTO.

Demonstration of an External Cavity Terahertz Quantum Cascade Laser

H. Beere, D. Ritchie, A. Tredicucci, 2005 .

Ultralow threshold current terahertz quantum cascade lasers based on double-metal buried strip waveguides

C. Sirtori, H. Beere, D. Ritchie, 2005, cond-mat/0503186.

Buried waveguides in terahertz quantum cascade lasers based on two-dimensional surface plasmon modes

Carlo Sirtori, David A. Ritchie, M. Calligaro, 2005 .

Optimisation of resonant tunnelling injection and doping density in high-performance THz superlattice quantum cascade lasers

E. Linfield, H. Beere, D. Ritchie, 2004, The 17th Annual Meeting of the IEEELasers and Electro-Optics Society, 2004. LEOS 2004..

Buried heterostructure 2.9 THz quantum cascade lasers operating up to 77 K in continuous wave using two-dimensional surface plasmon confinement

E. Linfield, C. Sirtori, H. Beere, 2004, The 17th Annual Meeting of the IEEELasers and Electro-Optics Society, 2004. LEOS 2004..

Terahertz quantum cascade lasers

H. E. Beere, E. Linfield, H. Beere, 2004 .

Quantum cascade lasers emitting at lambda greater than 100 µm

E. Linfield, H. Beere, D. Ritchie, 2003 .

Terahertz quantum cascade lasers

Fabio Beltram, Alessandro Tredicucci, Ruedeger Koehler, 2003, SPIE OPTO.

MBE growth of terahertz quantum cascade semiconductor lasers

A. Davies, E. Linfield, J. Faist, 2002, International Conference on Molecular Bean Epitaxy.

Continuous wave terahertz quantum cascade laser

A. Davies, E. Linfield, H. Beere, 2002, Proceedings, IEEE Tenth International Conference on Terahertz Electronics.

Terahertz quantum cascade lasers

H. E. Beere, H. Beere, F. Rossi, 2002, Proceedings, IEEE Tenth International Conference on Terahertz Electronics.

Terahertz Semiconductor-Heterostructure Laser.

E. Linfield, H. Beere, D. Ritchie, 2002 .

Far infrared quantum-cascade lasers based on a bound-to-continuum transition

M. Beck, J. Faist, G. Scalari, 2001, Conference on Lasers and Electro-Optics, 2003. CLEO '03..

Tailoring the Emission of Terahertz Quantum Cascade Lasers

H. Beere, D. Ritchie, R. Green, 2007 .

Optical Properties of Metal-dielectric-metal Microcavities in the Thz Frequency Range References and Links

R. S. Stepleman, W. A. Murray, J. Pendry, 2022 .