[1] [1] FAIST J, CAPASSO F, SIVCO D L, et al. Quantum cascade laser[J]. Science, 1994, 264(5158): 553-556.

[2] [2] WANG Y, ZHANG Y, WANG J, et al. High-power mid-infrared quantum cascade laser with large emitter width[J]. MDPI photonics, 2024, 11(3): 214.

[3] [3] LIU L, HUAN H, ZHANG X, et al. Wavelength-modulated photoacoustic spectroscopic instrumentation system for multiple greenhouse gas detection and in-field application in the Qinling mountainous region of China[J]. Photoacoustics, 2024, 38: 100620.

[4] [4] QI X, BERTLING K, TORNIAINEN J, et al. Terahertz in vivo imaging of human skin: toward detection of abnormal skin pathologies[J]. APL bioengineering, 2024, 8(1): 016117.

[5] [5] HAN M, JOHARIFAR M, WANG M, et al. Long-wave infrared discrete multitone free-space transmission using a 9.15-m quantum cascade laser[J]. IEEE photonics technology letters, 2023, 35(9): 489-492.

[6] [6] SEMINARA M, GABBRIELLI T, CORRIAS N, et al. Characterization of noise regimes in mid-IR free-space optical communication based on quantum cascade lasers[J]. Optics express, 2022, 30(25): 44640-44656.

[7] [7] DUDELEV V V, CHEROTCHENKO E D, VRUBEL I I, et al. Quantum cascade lasers for the 8-m spectral range: technology, design, and analysis[J]. Physics-Uspekhi, 2024, 67(1): 92-98.

[8] [8] HLAING M H, AZEVEDO C, KHAN M A. High-precision characterization of quantum-cascade laser frequency response using wavelength modulation spectroscopy[J]. Review of scientific instruments, 2024, 95(3): 033009.

[9] [9] ANFIMOV D R, GOLYAK I S, DEMKIN P P, et al. Pulsed tunable quantum cascade laser in the spectral range of 9.6-12.5 m[J]. Technical physics, 2024, 69(3): 456-461.

[10] [10] MA Y, DING K, WEI L, et al. Research on mid-infrared external cavity quantum cascade lasers and applications[J]. Crystals, 2022, 12(11): 1564.

[11] [11] YE F, CHENG F, JIA Z, et al. Stable single-mode 20-channel uniform buried grating DFB QCL array emitting at ~8.3 m[J]. Optical and quantum electronics, 2022, 54(4): 236.

[12] [12] MA Y, DING K, WEI L, et al. Research on mid-infrared external cavity quantum cascade lasers and applications[J]. Crystals, 2022, 12(11): 1564.

[13] [13] MA Y, WU H, LI Z, et al. 4 m waveband widely tunable external cavity quantum cascade laser[J]. Chinese journal of lasers, 2023, 50(11): 1101020.

[14] [14] SILVESTRI C, QI X, TAIMRE T, et al. Frequency combs induced by optical feedback and harmonic order tunability in quantum cascade lasers[J]. APL photonics, 2023, 8(11): 116102.

[15] [15] LUKASIEVICZ G V B, SEHN E, DABROWSKA A, et al. Mid-infrared photothermal lens spectroscopy of liquids using an external cavity quantum cascade laser[C]//2024 Mid-Infrared Coherent Sources, March 12-14, 2024, Vienna, Austria. Washington: Optica Publishing Group, 2024: MTh3C.5.

[16] [16] HUANG J, LI D, ZHANG J, et al. Heat dissipation and temperature control method for quantum cascade lasers in external cavity spectral beam combining systems[J]. Applied optics, 2024, 63(20): 5457-5464.

[17] [17] HUANG B, KOSAN N, WYSOCKI G. Controlled generation of harmonic states in mid-infrared quantum cascade laser frequency combs by external cavity optical feedback[J]. Optics express, 2024, 32(2): 1966-1978.

[18] [18] WU H, ZHANG J, CHEN C, et al. Ultra-widely tunable quantum cascade laser based on scalable external cavity with multiple chips[J]. Infrared physics & technology, 2024, 137: 105165.

[19] [19] YE F, CHENG F, JIA Z, et al. Stable single-mode operation of distributed feedback quantum cascade laser under high current via a grating reflector[J]. Nanophotonics, 2023, 12(10): 1903-1912.

[20] [20] MA K, LIU Z, CHENG F, et al. Wavelength-stable metal grating distributed feedback quantum cascade laser emitting at ~7.2 m[J]. Chemosensors, 2023, 12(1): 2.

[21] [21] BAI Y, BANDYOPADHYAY N, TSAO S, et al. Highly temperature insensitive quantum cascade lasers[J]. Applied physics letters, 2010, 97(25): 251104.

[22] [22] ZHANG D L, TIAN W, ZHU L Q, et al. A quantum cascade laser with new band structure: CN2022113236712[P]. 2023-01-24[2024-03-30].