Theoretical investigation of a novel Mach-Zehnder-Interferometer-based external cavity diode laser used for tunable diode laser absorption spectroscopy system

Xiao Xiao; Haitao Zhang; Jianquan Zhang; Guopeng Zhou; Fengqi Yu; George N. Lawrence; Xuejiao Hu

doi:10.1117/12.3017354

15 December 2023 Theoretical investigation of a novel Mach-Zehnder-Interferometer-based external cavity diode laser used for tunable diode laser absorption spectroscopy system

Xiao Xiao, Haitao Zhang, Jianquan Zhang, Guopeng Zhou, Fengqi Yu, George N. Lawrence, Xuejiao Hu

Author Affiliations +

Proceedings Volume 12971, Third International Conference on Optics and Communication Technology (ICOCT 2023); 1297103 (2023) https://doi.org/10.1117/12.3017354
Event: Third International Conference on Optics and Communication Technology (ICOCT 2023), 2023, Changchun, China

Abstract

A novel Mach-Zehnder-interferometer (MZI)-based external cavity diode laser (ECDL) has been proposed and theoretically investigated in this study as a light source for tunable diode laser absorption spectroscopy (TDLAS). The proposed model can modulate the dual-arm optical path difference and the round-trip optical path length of the ECDL external cavity. The results demonstrate that the wavelengths of a certain MZI pass band center and the ECDL external cavity longitudinal mode may track each other over a significant range of voltage variation leading to mode-hop-free performance. Therefore, it can be used in the TDLAS system for gas detection and characterization and is expected to replace the DFB laser.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiao Xiao, Haitao Zhang, Jianquan Zhang, Guopeng Zhou, Fengqi Yu, George N. Lawrence, and Xuejiao Hu "Theoretical investigation of a novel Mach-Zehnder-Interferometer-based external cavity diode laser used for tunable diode laser absorption spectroscopy system", Proc. SPIE 12971, Third International Conference on Optics and Communication Technology (ICOCT 2023), 1297103 (15 December 2023); https://doi.org/10.1117/12.3017354

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