1 Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Beijing 100083, China; 2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract A multimode interference (MMI) structure is designed to simplify the fabrication of quantum cascade laser (QCL) phase-locked arrays. The MMI geometry is optimized with a sufficient output channel distance to accommodate conventional photolithography and wet etching process by which power amplifier array is fabricated without using the complicated two-step etching-regrowth or dry etching technique. The far-field pattern with periodically modulated peaks reveals that the beams from the arrays are phase-locked. Furthermore, the frequency tuning performance of the MMI-based phase-locked arrays is studied using the Littrow-configuration external cavity structure. A wavelength tuning range of more than 60 cm-1 is demonstrated, which will eventually realize the high power, frequency tunable, large-scale phase-locked arrays, and their application in spectroscopy.
Fund: Project supported by the National Basic Research Program of China (Grant Nos. 2018YFA0209103 and 2018YFB2200504), the National Natural Science Foundation of China (Grant Nos. 61991430, 61774146, 61790583, 61674144, 61774150, and 61805168), the Beijing Municipal Science & Technology Commission, China (Grant No. Z201100004020006), and the Key Projects of the Chinese Academy of Sciences (Grant Nos. 2018147, YJKYYQ20190002, QYZDJ-SSW-JSC027, and XDB43000000).
Corresponding Authors:
Jin-Chuan Zhang, Feng-Qi Liu
E-mail: zhangjinchuan@semi.ac.cn;fqliu@semi.ac.cn
Cite this article:
Zeng-Hui Gu(顾增辉), Jin-Chuan Zhang(张锦川), Huan Wang(王欢), Peng-Chang Yang(杨鹏昌), Ning Zhuo(卓宁), Shen-Qiang Zhai(翟慎强), Jun-Qi Liu(刘俊岐), Li-Jun Wang(王利军), Shu-Man Liu(刘舒曼), Feng-Qi Liu(刘峰奇), and Zhan-Guo Wang(王占国) Tunable characteristic of phase-locked quantum cascade laser arrays 2021 Chin. Phys. B 30 104201
[1] Faist J, Capasso F, Sivco D L, Sirtori C, Hutchinson A L and Cho A Y 1994 Science264 5158 [2] Bai Y, Bandyopadhyay N, Tsao S, Slivken S and Razeghi M 2011 Appl. Phys. Lett.98 18 [3] Lu Q Y, Wu D H, Sengupta S, Slivken S and Razeghi M 2016 Sci. Rep-Uk6 23595 [4] Zhou W, Slivken S and Razeghi M 2018 Appl. Phys. Lett.112 181106 [5] Zhou W J, Wu D H, Lu Q Y, Slivken S and Razeghi M 2018 Sci. Rep-Uk8 14866 [6] Kirch J D, Chang C C, Boyle C, Mawst L J, Lindberg D, Earles T and Botez D 2015 Appl. Phys. Lett.106 6 [7] Wang L, Zhang J C, Jia Z W, Zhao Y, Liu C W, Liu Y H, Zhai S Q, Zhuo N, Xu X G and Liu F Q 2016 Opt. Express24 26 [8] Liu Y H, Zhang J C, Yan F L, Liu F Q, Zhuo N, Wang L J, Liu J Q and Wang Z G 2015 Appl. Phys. Lett.106 142104 [9] Zhou W J, Lu Q Y, Wu D H, Slivken S and Razeghi M 2019 Opt. Express27 11 [10] Hamamoto K and Jiang H S 2015 J. Phys. D: Appl. Phys.48 38 [11] Soldano L B and Pennings E C M 1995 J. Lightwave Technol.13 4 [12] Pennings E C M, Vanroijen R, Vanstralen M J N, Dewaard P J, Koumans R G M P and Verbeek B H 1994 IEEE Photonic Tech. Lett.6 6 [13] Wang C A, Schwarz B, Siriani DF, Missaggia L J, Connors M K, Mansuripur T S, Calawa D R, McNulty D, Nickerson M, Donnelly J P, Creedon K and Capasso F 2017 IEEE J. Sel. Top. Quantum Electron.23 6 [14] Mammez D, Vallon R, Parvitte B, Mammez MH, Carras M and Zeninari V 2014 Appl. Phys. B-Lasers Opt.116 4 [15] Maulini R, Yarekha D A, Bulliard J M, Giovannini M and Faist J 2005 Opt. Lett.30 19 [16] Mroziewicz B 2008 Opto-Electron Rev.16 347 [17] Gmachl C, Straub A, Colombelli R, Capasso F, Sivco D L, Sergent A M, and Cho A Y 2002 IEEE J. Quantum Electron.38 569
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