scholarly journals Coherent frequency combs produced by self frequency modulation in quantum cascade lasers

2014 ◽  
Vol 104 (8) ◽  
pp. 081118 ◽  
Author(s):  
J. B. Khurgin ◽  
Y. Dikmelik ◽  
A. Hugi ◽  
J. Faist
Keyword(s):  
Frequency Modulation ◽  
Quantum Cascade Lasers ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Cascade Lasers

Current and frequency modulation characteristics for continuous-wave quantum cascade lasers at 906 μm

2012 ◽  
Vol 37 (8) ◽  
pp. 1358 ◽  
Author(s):  
Lei Tao ◽  
Kang Sun ◽  
David J. Miller ◽  
M. Amir Khan ◽  
Mark A. Zondlo
Keyword(s):  
Frequency Modulation ◽  
Continuous Wave ◽  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Cascade Lasers

High Frequency Modulation and Optical Free Space Video Transmission using Quantum Cascade Lasers

2001 ◽  
Author(s):  
Rainer Martini ◽  
Claire Gmachl ◽  
Clyde G. Bethea ◽  
Federico Capasso ◽  
Jennifer Falciglia ◽  
...  
Keyword(s):  
Frequency Modulation ◽  
High Frequency ◽  
Free Space ◽  
Video Transmission ◽  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Cascade Lasers

scholarly journals Pseudorandom dynamics of frequency combs in free-running quantum cascade lasers

2017 ◽  
Vol 57 (01) ◽  
pp. 1 ◽  
Author(s):  
Nathan Henry ◽  
David Burghoff ◽  
Yang Yang ◽  
Qing Hu ◽  
Jacob B. Khurgin
Keyword(s):  
Quantum Cascade Lasers ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Free Running ◽  
Cascade Lasers

scholarly journals Tuning properties of mid-infrared Fabry-Pérot quantum cascade lasers for multiheterodyne spectroscopy

2016 ◽  
Vol 8 (4) ◽  
pp. 113 ◽  
Author(s):  
Lukasz Antoni Sterczewski ◽  
Jonas Westberg ◽  
Gerard Wysocki
Keyword(s):  
High Resolution ◽  
Quantum Cascade Laser ◽  
Quantum Cascade Lasers ◽  
Laser Frequency ◽  
Hole Burning ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Fabry Perot ◽  
Cascade Lasers

Injection current tuning properties of an 8.5 um Fabry-Pérot mid-infrared quantum cascade laser are evaluated by analyzing the mode-by-mode frequency tuning behavior with an identification of high-noise regimes in a delayed self-heterodyne experiment. We find that modes on the edges of the spectral envelope exhibit anomalous tuning coefficients compared to those in the center. Furthermore, the frequencies of individual modes are susceptible to parasitic etalons, likely causing laser frequency pulling. Despite the complicated tuning behavior, low phase-noise operating regimes exist, and are compatible with high resolution multiheterodyne spectroscopy of gases. Full Text: PDF ReferencesJ. Faist, F. Capasso, D.L. Sivco, C. Sirtori, A.L. Hutchinson, A.Y. Cho, "Quantum Cascade Laser", Science 264 (1994) 553?556. CrossRef A. Hugi, G. Villares, S. Blaser, H.C. Liu, J. Faist, "Mid-infrared frequency comb based on a quantum cascade laser", Nature 492 (2012) 229?233. CrossRef G. Villares, A. Hugi, S. Blaser, J. Faist,"Dual-comb spectroscopy based on quantum-cascade-laser frequency combs", Nat. Commun. 5 (2014) 5192. CrossRef G. Villares, S. Riedi, J. Wolf, D. Kazakov, M.J. Süess, P. Jouy, M. Beck, J. Faist, "Dispersion engineering of quantum cascade laser frequency combs", Optica 3 (2016) 252. CrossRef Y. Wang, M.G. Soskind, W. Wang, G. Wysocki, "High-resolution multi-heterodyne spectroscopy based on Fabry-Perot quantum cascade lasers", Appl. Phys. Lett. 104 (2014) 31114. CrossRef A. Hangauer, J. Westberg, E. Zhang, G. Wysocki, "Wavelength modulated multiheterodyne spectroscopy using Fabry-Pérot quantum cascade lasers", Opt. Express 24 (2016) 25298. CrossRef D. Burghoff, Y. Yang, D.J. Hayton, J.-R. Gao, J.L. Reno, Q. Hu, "Evaluating the coherence and time-domain profile of quantum cascade laser frequency combs", Opt. Express 23 (2015) 1190?1202. CrossRef A. Gordon, C.Y. Wang, L. Diehl, F.X. Kärtner, A. Belyanin, D. Bour, S. Corzine, G. Höfler, H.C. Liu, H. Schneider, T. Maier, M. Troccoli, J. Faist, F. Capasso, "Multimode regimes in quantum cascade lasers: From coherent instabilities to spatial hole burning", Phys. Rev. A 77 (2008). CrossRef S. Blaser, D.A. Yarekha, L. Hvozdara, Y. Bonetti, A. Muller, M. Giovannini, J. Faist, "Room-temperature, continuous-wave, single-mode quantum-cascade lasers at ?=5.4?m", Appl. Phys. Lett. 86 (2005) 41109. CrossRef S. Schiller, "Spectrometry with frequency combs", Opt. Lett. 27 (2002) 766?768. CrossRef T. Tsai, G. Wysocki, "Active wavelength control of an external cavity quantum cascade laser", Appl. Phys. B Lasers Opt. 109 (2012) 415?421. CrossRef

Quantum Cascade Lasers

2020 ◽  
pp. 491-526
Author(s):  
Vurgaftman Igor
Keyword(s):  
Quantum Cascade Lasers ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Interface Roughness ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Wall Plug Efficiency ◽  
Interface Roughness Scattering ◽  
Cascade Lasers ◽  
Considerable Detail

This chapter describes the most commonly used approaches for computing the band structure of active materials with intersubband optical transitions. The physics of quantum cascade lasers (QCLs) is discussed in detail, including the mechanisms that limit the threshold current density, threshold voltage, wall-plug efficiency, and temperature sensitivity of state-of-the-art devices. The important roles of phonon and interface roughness scattering in determining threshold are emphasized. The chapter also compares the performance of QCLs to other mid-IR lasers in considerable detail and makes some conclusions as to which sources are preferred depending on the emission wavelength and application. Finally, the physical principles of laser-based frequency combs, including self-starting frequency-modulated QCL combs, are discussed.

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