[1] Bui D A, Hauser P C. Analytical devices based on light-emitting diodes - a review of the state-of-the-art[J]. Analytica Chimica Acta, 853, 46-58(2015).

[2] Tsai S R, Hamblin M R. Biological effects and medical applications of infrared radiation[J]. Journal of Photochemistry and Photobiology B-Biology, 170, 197-207(2017).

[3] Jung D, Bank S, Lee M L et al. Next-generation mid-infrared sources[J]. Journal of Optics, 19, 123001(2017).

[4] Ricker R J, Provence S R, Norton D T et al. Broadband mid-infrared superlattice light-emitting diodes[J]. Journal of Applied Physics, 121, 185701(2017).

[5] Ermolaev M, Lin Y X, Shterengas L et al. GaSb-Based Type-I Quantum Well 3-3.5 lm Cascade Light Emitting Diodes[J]. IEEE Photonics Technology Letters, 30, 869-872(2018).

[6] Kim C S, Bewley W W, Merritt C D et al. Improved mid-infrared interband cascade light-emitting devices[J]. Optical engineering, 57, 011002(2018).

[7] Zhou Y, Lu Q, Chai X L et al. InAs/GaSb superlattice interband cascade light emitting diodes with high output power and high wall-plug efficiency[J]. Applied Physics Letters, 114, 253507(2019).

[8] Schubert E F[M]. Light-Emitting Diodes, 163-190(2006).

[9] Montealegre D A, Schrock K N, Walhof A C et al. High-power mid-wave infrared LED using W-superlattices and textured surfaces[J]. Applied Physics Letters, 118, 071105(2021).

[10] Weng B B, Qiu J J, Shi Z S. Continuous-wave mid-infrared photonic crystal light emitters at room temperature[J]. Applied Physics B-Lasers and Optics, 123, 29(2017).

[11] Al-Saymari F A, Craig A P, Lu Q et al. Mid-infrared resonant cavity light emitting diodes operating at 4.5 μm[J]. Optics Express, 28, 23338-23353(2020).

[12] Diaz-Thomas D A, Stepanenko O, Bahriz M et al. 3.3 μm interband-cascade resonant-cavity light-emitting diode with narrow spectral emission linewidth[J]. Semiconductor Science and Technology, 35, 125029(2020).

[13] Blondelle J, Neve H D, Borghs G et al. High efficiency (> 20%) microcavity LEDs[J]. IEEE Colloquium, 267, 12-14(1996).

[14] Jin J-M. The Finite Element Method[M]. Theory and Computation of Electromagnetic Fields, 342-398(2010).

[15] Benisty H, Stanley R, Mayer M. Method of source terms for dipole emission modification in modes of arbitrary planar structures[J]. Journal of the Optical Society of America a-Optics Image Science and Vision, 15, 1192-1201(1998).

[16] Mao H F, Silva K, Martyniuk M et al. MEMS-Based Tunable Fabry-Perot Filters for Adaptive Multispectral Thermal Imaging[J]. Journal of Microelectromechanical Systems, 25, 227-235(2016).

[17] Zhmakin A I. Enhancement of light extraction from light emitting diodes[J]. Physics Reports-Review Section of Physics Letters, 498, 189-241(2011).

[18] Yeh P[M]. Optical waves in layered media, 58-82(1988).

[19] Baets R G, Delbeke D G, Bockstaele R et al. Resonant-Cavity Light-Emitting Diodes: A review[J]. Proceedings of SPIE-The International Society for Optical Engineering, 4996, 74-86(2003).

[20] Meriggi L, Steer M J, Ding Y et al. Development of mid-infrared light-emitting diodes for low-power optical gas sensors[C], 180-183(2015).