Mid-infrared multiheterodyne spectroscopy with phase-locked quantum cascade lasers

Fabry-Perot (FP) quantum cascade lasers (QCLs) provide purely electronically controlled monolithic sources for broadband mid-infrared (mid-IR) multiheterodyne spectroscopy (MHS), which benefits from the large gain bandwidth of the QCLs without sacrificing the narrowband properties commonly associated with the single mode distributed feedback variant. We demonstrate a FP-QCL based multiheterodyne spectrometer with a short-term noise-equivalent absorption of ∼3 × 10−4/ H z, a mid-IR spectral coverage of 25 cm−1, and very short acquisition time (10 μs) capability. The broadband potential is demonstrated by measuring the absorption spectra of ammonia and isobutane under atmospheric pressure conditions. The stability of the system is enhanced by a two-stage active frequency inter-locking procedure, where the two QCLs are pre-locked with a slow feedback loop based on an analog frequency discriminator, followed by a high bandwidth optical phase-locked loop. The locking system provides a relative frequency stabil...

[1]  T. Johnson,et al.  Gas-Phase Databases for Quantitative Infrared Spectroscopy , 2004, Applied spectroscopy.

[2]  Boris Mizaikoff,et al.  Advances in Mid-Infrared Spectroscopy for Chemical Analysis. , 2016, Annual review of analytical chemistry.

[3]  Jérôme Faist,et al.  External cavity quantum cascade laser , 2010 .

[4]  Tom Gardiner,et al.  Mid-infrared dual-comb spectroscopy with an optical parametric oscillator. , 2013, Optics letters.

[5]  Laura C Sinclair,et al.  Broadband Phase Spectroscopy over Turbulent Air Paths. , 2015, Physical review letters.

[6]  Markus Brehm,et al.  Frequency-comb infrared spectrometer for rapid, remote chemical sensing. , 2005, Optics express.

[7]  Weiqi Wang,et al.  High-resolution multi-heterodyne spectroscopy based on Fabry-Perot quantum cascade lasers , 2014 .

[8]  T. Kippenberg,et al.  Microresonator-Based Optical Frequency Combs , 2011, Science.

[9]  I. Coddington,et al.  Coherent dual-comb spectroscopy at high signal-to-noise ratio , 2010 .

[10]  Yves Bidaux,et al.  Extended and quasi-continuous tuning of quantum cascade lasers using superstructure gratings and integrated heaters , 2015 .

[11]  H. Gudbjartsson,et al.  The rician distribution of noisy mri data , 1995, Magnetic resonance in medicine.

[12]  Gerard Wysocki,et al.  Shot-noise Limited Faraday Rotation Spectroscopy for Detection of Nitric Oxide Isotopes in Breath, Urine, and Blood , 2015, Scientific Reports.

[13]  Christian Mohr,et al.  Fourier transform and Vernier spectroscopy using an optical frequency comb at 3-5.4  μm. , 2016, Optics letters.

[14]  Julien Mandon,et al.  Fourier transform spectroscopy with a laser frequency comb , 2009 .

[15]  S. Sharpe,et al.  Widely tunable rapid-scanning mid-infrared laser spectrometer for industrial gas process stream analysis , 2007 .

[16]  Mattias Beck,et al.  On-chip dual-comb based on quantum cascade laser frequency combs , 2015, 1510.09158.

[17]  S. Corzine,et al.  Widely tunable mode-hop free external cavity quantum cascade lasers for high resolution spectroscopy and chemical sensing , 2008 .

[18]  Jerome Faist,et al.  Dual-comb spectroscopy based on quantum-cascade-laser frequency combs , 2014, Nature Communications.

[19]  I. Coddington,et al.  Coherent multiheterodyne spectroscopy using stabilized optical frequency combs. , 2007, Physical review letters.

[20]  V. Vaks,et al.  Phase-locked Josephson flux flow local oscillator for sub-mm integrated receivers , 2002 .

[21]  S. Schiller,et al.  Spectrometry with frequency combs. , 2002, Optics letters.

[22]  Yves Bidaux,et al.  Extended tuning of mid-ir quantum cascade lasers using integrated resistive heaters. , 2015, Optics express.

[23]  Gerard Wysocki,et al.  Wavelength modulated multiheterodyne spectroscopy using Fabry-Pérot quantum cascade lasers. , 2016, Optics express.

[24]  Gerard Wysocki,et al.  Molecular dispersion spectroscopy based on Fabry-Perot quantum cascade lasers. , 2017, Optics letters.

[25]  J. Faist,et al.  Mid-infrared frequency comb based on a quantum cascade laser , 2012, Nature.

[26]  P Khosropanah,et al.  Phase locking of a 2.7 THz quantum cascade laser to a microwave reference. , 2009, Optics letters.

[27]  I. Coddington,et al.  Spectroscopy of the methane {nu}{sub 3} band with an accurate midinfrared coherent dual-comb spectrometer , 2011 .

[28]  R. Henkelman.  Measurement of signal intensities in the presence of noise in MR images. , 1985, Medical physics.

[29]  Fritz Keilmann,et al.  Time-domain mid-infrared frequency-comb spectrometer. , 2004, Optics letters.