| 纳秒电光调Q Nd:YVO4激光器 |
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| 引用本文： | 张翔, 冯驰, 谢希盈, 等. 纳秒电光调Q Nd:YVO4激光器[J]. 强激光与粒子束, 2011, 23(09). |
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| 作者姓名： | 张翔 冯驰 谢希盈 宴乐仑 雷訇 李强 |
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| 作者单位： | 1.北京工业大学 激光工程研究院, 北京 1 001 24 |
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| 摘 要： | 介绍了一种新颖的短腔电光调Q窄脉宽激光器，通过分析影响脉宽的主要因素，确定了激光器的结构及参数。在准连续端面泵浦条件下，采用掺杂原子分数为1.0%、沿a轴切成布儒斯特角的Nd:YVO4晶体作为增益介质，直接获得偏振光振荡，有效缩短了腔长。在物理腔长20 mm时，采用退压式电光主动调Q结构，减小了插入损耗，获得了脉冲宽度为1.049 ns、单脉冲能量为0.32 mJ、光束质量平方因子为1.9的稳定激光输出。
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| 关 键 词： | 电光调Q 布儒斯特角 窄脉宽 激光器 |
Nanosecond electro-optically Q-switched Nd:YVO4 laser |
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| zhang xiang, feng chi, xie xiying, et al. Nanosecond electro-optically Q-switched Nd:YVO4 laser[J]. High Power Laser and Particle Beams, 2011, 23. |
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| Authors: | zhang xiang feng chi xie xiying yan lelun lei hong li qiang |
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| Affiliation: | 1. Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China |
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| Abstract: | A novel electro-optically Q-switched laser with short cavity was demonstrated. Its optimal structure parameters were determined via the analysis of factors related to output pulse width. Quasi-continuous end-pumped Nd:YVO4 crystal with concentration of 1.0 % was cut along Brewster angle in a-axis, in order to ensure polarized oscillation. Thus, the cavity length was shortened efficiently due to the omission of quarter wave plate in voltage-decreased Q-switching structure. In condition of 20 mm physical cavity length, the narrowest output pulse width of 1.049 ns, pulse energy of 0.32 mJ and beam quality factor of 1.9 were achieved. |
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| Keywords: | electro-optical q-switching brewster angle narrow pulse width laser |
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