| Suppressing the preferential σ-polarization oscillation in a high power Nd:YVO_4 laser with wedge laser crystal |
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| 引用本文： | 郑耀辉,周海军,王雅君,邬志强.Suppressing the preferential σ-polarization oscillation in a high power Nd:YVO_4 laser with wedge laser crystal[J].中国物理 B,2013,22(8):84207-084207. |
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| 作者姓名： | 郑耀辉 周海军 王雅君 邬志强 |
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| 作者单位： | State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China |
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| 基金项目： | supported by the National High Technology Research and Development Program of China(Grant No.2011AA030203);the National Basic Research Program of China(Grant No.2010CB923101);the National Natural Science Foundation of China(Grant No.61008001);the Natural Science Foundation of Shanxi Province,China(Grant No.2011021003-2) |
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| 摘 要： | We observe the phenomenon of priority oscillation of the unexpected σ -polarization in high-power Nd:YVO 4 ring laser. The severe thermal lens of the σ -polarized lasing, compared with the π-polarized lasing, is the only reason for the phenomenon. By designing a wedge Nd:YVO 4 crystal as the gain medium, the unexpected σ -polarization is completely suppressed in the entire range of pump powers, and the polarization stability of the expected π-polarized output is enhanced. With the output power increasing from threshold to the maximum power, no σ -polarization lasing is observed. As a result, 25.3 W of stable single-frequency laser output at 532 nm is experimentally demonstrated.
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| 收稿时间： | 2012-11-23 |
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