中国物理B ›› 2021, Vol. 30 ›› Issue (10): 104201-104201.doi: 10.1088/1674-1056/abec30
Zeng-Hui Gu(顾增辉)1,2, Jin-Chuan Zhang(张锦川)1,†, Huan Wang(王欢)1,2, Peng-Chang Yang(杨鹏昌)1,2, Ning Zhuo(卓宁)1, Shen-Qiang Zhai(翟慎强)1, Jun-Qi Liu(刘俊岐)1,2, Li-Jun Wang(王利军)1,2, Shu-Man Liu(刘舒曼)1,2, Feng-Qi Liu(刘峰奇)1,2,‡, and Zhan-Guo Wang(王占国)1,2
Zeng-Hui Gu(顾增辉)1,2, Jin-Chuan Zhang(张锦川)1,†, Huan Wang(王欢)1,2, Peng-Chang Yang(杨鹏昌)1,2, Ning Zhuo(卓宁)1, Shen-Qiang Zhai(翟慎强)1, Jun-Qi Liu(刘俊岐)1,2, Li-Jun Wang(王利军)1,2, Shu-Man Liu(刘舒曼)1,2, Feng-Qi Liu(刘峰奇)1,2,‡, and Zhan-Guo Wang(王占国)1,2
摘要: 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.
中图分类号: (Wave propagation, transmission and absorption)