Passively Q-switched laser performance of the mixed crystals Nd:Lu0.15 Y0.85 VO4, Nd:Lu0.5 Y0.5 VO4 and Nd:Lu0.33Y0.37Gd0.3VO4 with GaAs saturable absorber |
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| Authors: | Leilei Wu Shengzhi Zhao Dechun Li Guiqiu Li Kejian Yang Kang Cheng Bin Zhao |
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| Institution: | 1. School of Information Science and Engineering, Shandong University, Jinan, 250100, China
2. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350108, China
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| Abstract: | By using the mixed crystals Nd:Lu0.15 Y0.85 VO4, Nd:Lu0.5Y0.5VO4 and Nd:Lu0.33Y0.37Gd0.3VO4 as laser media, the LD pumped passively Q-switched mixed lasers with GaAs saturable absorber are realized. The average output power, the pulse width etc. have been measured and compared. The experimental results show that the passively Q-switched Nd:Lu0.33Y0.37Gd0.3VO4 laser can generate shorter pulse width with higher peak power due to broader fluorescence line-width. Under Gaussian spatial distribution approximation, the rate equations for LD pumped passively Q-switched lasers of the mixed crystals with GaAs saturable absorber are given. The numerical solutions of the equations are in agreement with the experimental results. |
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