Efficient passively Q-switched operation of a diode-pumped Nd:GGG laser with a Cr:YAG saturable absorber |
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| Authors: | Chun-Hua Zuo Hai-Tao Huang Bai-Tao Zhang Zhi-Tai Jia Chun-Ming Dong Xu-Tang Tao |
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| Affiliation: | State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China |
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| Abstract: | The continuous-wave (cw) and passive Q-switching operation of a diode-end-pumped gadolinium gallium garnet doped with neodymium (Nd:GGG) laser at 1062 nm was realized. A maximum cw output power of 6.9 W was obtained. The corresponding optical conversion efficiency was 50.9%, and the slope efficiency was determined to be 51.4%. By using Cr4+:YAG crystals as saturable absorbers, Q-switching pulse with average output power of 1.28 W, pulse width of 4 ns and repetition rate of 6.2 kHz were obtained. The single-pulse energy and peak power were estimated to be 206 μJ and 51.6 kW, respectively. The conversion efficiency of the output power from cw to Q-switching operation was as high as 84.7%. |
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| Keywords: | 42.55.Xi 42.60.Gd 42.60.Lh |
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