Q-switching of diode-end-pumped Nd:YVO4 laser with GaAs output coupler

Jianhui Gu; Feng Zhou; Siu Chung Tam; Yee Loy Lam; Chan Hin Kam; Wenjie Xie; Tuan-Kay Lim; Kah Tau Wan

doi:10.1117/12.368473

4 November 1999 Q-switching of diode-end-pumped Nd:YVO₄ laser with GaAs output coupler

Jianhui Gu, Feng Zhou, Siu Chung Tam, Yee Loy Lam, Chan Hin Kam, Wenjie Xie, Tuan-Kay Lim, Kah Tau Wan

Proceedings Volume 3898, Photonic Systems and Applications in Defense and Manufacturing; (1999) https://doi.org/10.1117/12.368473
Event: International Symposium on Photonics and Applications, 1999, Singapore, Singapore

Abstract

To improve the compactness of Q-switched diode-pumped solid- state lasers, a passively Q-switched diode-end-pumped Nd:YVO₄ laser was constructed using undoped and uncoated GaAs wafers as saturable absorbers as well as output couplers. GaAs wafers with two different thicknesses, 625 micrometers and 500 micrometers , were employed and their corresponding experimental result were compared. The result were also compared with those obtained with an active A-O Q-switch with similar cavity configuration and pumping condition. It is found that the Fabry-Perot effect of the GaAs wafer played an important role in shortening the Q-switched pulses and stabilizing the laser operation. The performance of passive Q-switching using the GaAs wafer with Fabry-Perot effect was better than that of both the passive Q-switching without Fabry-Perot effect and the active A-O Q-switching.

Citation Download Citation

Jianhui Gu, Feng Zhou, Siu Chung Tam, Yee Loy Lam, Chan Hin Kam, Wenjie Xie, Tuan-Kay Lim, and Kah Tau Wan "Q-switching of diode-end-pumped Nd:YVO₄ laser with GaAs output coupler", Proc. SPIE 3898, Photonic Systems and Applications in Defense and Manufacturing, (4 November 1999); https://doi.org/10.1117/12.368473

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