Near-field characterization and failure analysis of broad-area laser diode with optical feedback

Xinlian Miao; Zibang Xu; Song Tang; Yuxian Liu; Guowen Yang; Xiao Yuan

doi:10.1117/12.3031600

18 July 2024 Near-field characterization and failure analysis of broad-area laser diode with optical feedback

Xinlian Miao, Zibang Xu, Song Tang, Yuxian Liu, Guowen Yang, Xiao Yuan

Proceedings Volume 13179, International Conference on Optics and Machine Vision (ICOMV 2024); 1317903 (2024) https://doi.org/10.1117/12.3031600
Event: International Conference on Optics and Machine Vision (ICOMV 2024), 2024, Nanchang, China

Abstract

Optical feedback may cause accelerated degradation as well as catastrophic optical damage in high-power Laser diodes, directly limiting their output optical power and lifetime. Near-field distribution change caused by optical feedback has high relevance with the reliability and is worthy to be studied. In this study, the influence of optical feedback on the near-field distribution of the laser diode is investigated, as well as the influence on the device failure. A feedback light testing system is successfully established, which integrates power monitoring, spectral measurement, and near-field assessment. Through an investigation into the influence of feedback light, it was observed that it induces instability in the near-field distribution, leading to temporal variations. Under conditions of strong feedback, a stable near-field peak emerged. At even higher current levels, a clear correspondence was identified between the near-field peak and the point of failure. These findings offer valuable insights for the understanding of the influence of optical feedback on the nearfield distribution of the laser diode and its reliability.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xinlian Miao, Zibang Xu, Song Tang, Yuxian Liu, Guowen Yang, and Xiao Yuan "Near-field characterization and failure analysis of broad-area laser diode with optical feedback", Proc. SPIE 13179, International Conference on Optics and Machine Vision (ICOMV 2024), 1317903 (18 July 2024); https://doi.org/10.1117/12.3031600

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