Critical slowing down in polarization switching of vertical-cavity surface-emitting lasers

Yu-Heng Wu; Yueh-Chen Li; Wang-Chuang Kuo; Tsu-Chiang Yen

doi:10.1117/12.2051457

2 May 2014 Critical slowing down in polarization switching of vertical-cavity surface-emitting lasers

Yu-Heng Wu, Yueh-Chen Li, Wang-Chuang Kuo, Tsu-Chiang Yen

Proceedings Volume 9134, Semiconductor Lasers and Laser Dynamics VI; 91341O (2014) https://doi.org/10.1117/12.2051457
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

This research investigated the critical slowing down in polarization switching (PS) of vertical-cavity surface-emitting lasers (VCSELs). The experiments were performed by step-function current injection in two types: step-up and stepdown. In the case of step-up and step-down, the relationship between relaxation time and final current in this experiment resembles critical slowing down (CSD). The critical currents of two step-function current experiment are compared. The PS in this experiment is a static case. We also find that the divergence of relaxation time follow a power law. These results contribute to the understanding of the mechanism of CSD in VCSEL's PS (VPS).

Citation Download Citation

Yu-Heng Wu, Yueh-Chen Li, Wang-Chuang Kuo, and Tsu-Chiang Yen "Critical slowing down in polarization switching of vertical-cavity surface-emitting lasers", Proc. SPIE 9134, Semiconductor Lasers and Laser Dynamics VI, 91341O (2 May 2014); https://doi.org/10.1117/12.2051457

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