Distributed feedback quantum cascade lasers at 13.8 μm on indium phosphide

We report on the growth, processing, and characterization of distributed feedback quantum cascade lasers emitting in single mode at 13.8 μm. Lasers were grown in the indium phosphide material system with a bound-to-continuum active region and processed as double channel ridges with metalized top grating. Electro-optic characteristics as well as current and temperature tuning are investigated. Maximum single mode peak powers exceeding 800 mW at room temperature and intrapulse-tuning covering 3 cm−1 for a gas absorption experiment are demonstrated. Furthermore data on the far field are presented showing a slow-axis divergence angle of 28.3° (full width at half maximum).

[1]  Jie Zhu,et al.  Development of a Rapid On-Line Acetylene Sensor for Industrial Hydrogenation Reactor Optimization Using Off-Axis Integrated Cavity Output Spectroscopy , 2008, Applied spectroscopy.

[2]  Roland Teissier,et al.  Quantum cascade lasers emitting near 2.6 μm , 2010 .

[3]  Mykhaylo P. Semtsiv,et al.  Short-wavelength (λ≈3.05μm) InP-based strain-compensated quantum-cascade laser , 2006 .

[4]  J. Röpcke,et al.  Diagnostic studies of molecular plasmas using mid-infrared semiconductor lasers , 2008 .

[5]  Wei Zhang,et al.  High-power, continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼7.8μm , 2006 .

[6]  K. Tada,et al.  Electron Cyclotron Resonance-Reactive Ion Beam Etching of InP by Cyclic Injection of CH4/H2/Ar and O2 , 2002 .

[7]  Peter Fuchs,et al.  DFB Lasers Between 760 nm and 16 μm for Sensing Applications , 2010, Sensors.

[8]  Tadataka Edamura,et al.  Extremely high T0-values (∼450 K) of long-wavelength (∼15 μm), low-threshold-current-density quantum-cascade lasers based on the indirect pump scheme , 2010 .

[9]  Sven Höfling,et al.  Mid-infrared semiconductor heterostructure lasers for gas sensing applications , 2010 .

[10]  M. Beck,et al.  Chemical sensing with pulsed QC-DFB lasers operating at 15.6 μm , 2002, Applied physics. B, Lasers and optics.

[11]  Carlo Sirtori,et al.  Distributed feedback quantum cascade lasers , 1997 .

[12]  Wei Zhang,et al.  High-power, continuous-operation intersubband laser for wavelengths greater than 10 μm , 2007 .

[13]  William W. Bewley,et al.  Corrugated-sidewall interband cascade lasers with single-mode midwave-infrared emission at room temperature , 2009 .

[14]  Johannes Koeth,et al.  Acetylene measurement using quantum cascade lasers at 14μm , 2011, OPTO.

[15]  Mattias Beck,et al.  Long-wavelength (λ≈16 μm), room-temperature, single-frequency quantum-cascade lasers based on a bound-to-continuum transition , 2001 .