Composite Yb:YAG/Cr<sup>4+</sup>:YAG/YAG crystal passively Q-switched lasers at 1030&#x2009;&#x2009;nm

Wei Jiang; Yumeng Liu; Weidong Chen; Siqi Zhu; Zaijun Chen; Ge Zhang; Yihong Chen; Zhenqiang Chen

doi:10.1364/AO.54.001834

Applied Optics
Vol. 54,
Issue 7,
pp. 1834-1838
(2015)
•https://doi.org/10.1364/AO.54.001834

Composite Yb:YAG/Cr⁴⁺:YAG/YAG crystal passively Q-switched lasers at 1030 nm

Wei Jiang, Yumeng Liu, Weidong Chen, Siqi Zhu, Zaijun Chen, Ge Zhang, Yihong Chen, and Zhenqiang Chen

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Wei Jiang, Yumeng Liu, Weidong Chen, Siqi Zhu, Zaijun Chen, Ge Zhang, Yihong Chen, and Zhenqiang Chen, "Composite Yb:YAG/Cr⁴⁺:YAG/YAG crystal passively Q-switched lasers at 1030 nm," Appl. Opt. 54, 1834-1838 (2015)

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Abstract

We experimentally demonstrate efficient passively $Q$ -switched bulk lasers with composite $Yb : YAG / {Cr}^{4 +} : YAG / YAG$ crystals at 1030 nm for the first time, to the best of our knowledge. The output performance was investigated based on different initial transmissions ( $T_{0}$ ) of ${Cr}^{4 +} : YAG$ and different transmissions ( $T_{oc}$ ) of output coupler. Stable passive $Q$ -switching with composite crystal of $T_{0} = 85 %$ and output coupler of $T_{oc} = 32 %$ resulted in the maximum average output power of 2.55 W, with corresponding pulse duration of 11.5 ns and repetition rate of 5.71 kHz. The pulse energy and peak power were 446.25 μJ and 38.8 kW, respectively.

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Applied Optics