| 二极管角部抽运Nd:YAG基模激光器 |
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| 引用本文： | 张志攀,巩马理,高松,张海涛.二极管角部抽运Nd:YAG基模激光器[J].激光技术,2009,33(1):1-4. |
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| 作者姓名： | 张志攀 巩马理 高松 张海涛 |
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| 作者单位： | 1.清华大学, 精密仪器与机械学系, 光子与电子技术研究中心, 摩擦学国家重点实验室, 北京, 100084 |
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| 基金项目： | 国家教育部科学技术基金 |
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| 摘 要： | 为了分析角部抽运方式在中小功率激光器设计中的可行性,基于光线追迹法,计算了不同的激光介质几何结构参量和不同的二极管温度条件下角部抽运复合板条激光器的抽运效率和抽运均匀性。从模拟计算结果可知,只要选择合理的激光介质结构参量,角抽运方式能得到高的抽运效率和较好的抽运均匀性。设计了一种角部抽运Nd:YAG复合板条激光器,在45W的抽运功率下获得了12W的激光输出,光光转换效率约为26.7%,在40W抽运时光束质量Mx2=1.47,My2=1.36。理论分析和实验设计表明,角抽运方式在小功率激光器设计中是可行的。
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| 关 键 词： | 激光器 角部抽运 光线追迹法 抽运效率 抽运均匀性 |
| 收稿时间： | 2007-10-15 |
| 修稿时间： | 2007-11-01 |
LD corner-pumped Nd:YAG laser in TEM00 operation |
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| Abstract: | Ray-tracing algorithm are used to simulate the pumping efficiency and absorbed energy distribution of LD corner-pumped laser for different laser medium parameters and different LD temperatures, and the experiment results of LD corner-pumped composite Nd:YAG slab laser show that the output power is 12W at a optical-optical efficiency of above 26.7%, and the M2 factors of beam quality at width and thickness direction are 1.86 and 1.69 respectively. With the increase of absorption coefficient and width of laser medium, pumping efficiency is obviously enhanced and almost reaches absolute absorption, but pump uniformity gradually degenerate. The pumping efficiency changes a little within the given temperature range. With appropriate choice of laser medium parameters, high pumping efficiency and good pump uniformity can be obtained for corner-pumped composite slab lasers. |
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| Keywords: | lasers corner-pumped ray-tracing algorithm pumping efficiency pump uniformity |
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