| 高亮度人眼安全KTP OPO激光器 |
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| 引用本文： | 包照日格图,姜东升,周寿桓. 高亮度人眼安全KTP OPO激光器[J]. 强激光与粒子束, 2005, 17(Z1): 198-200 |
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| 作者姓名： | 包照日格图 姜东升 周寿桓 |
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| 作者单位： | 固体激光技术国家重点实验室,北京,100015 |
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| 基金项目： | 固体激光技术国家重点实验室基金资助课题 |
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| 摘 要： | 采用多模NdYAG激光器泵浦非临界相位匹配的KTP-OPO,获得了光束角2.3 mrad、输出能量400 mJ、平均功率12 W、光-光转换效率40%的1 572 nm激光.泵浦源的参数为能量1 J、重复频率30 Hz.分析认为采用KTP OPO将NdYAG激光器的1 μm激光转换到人眼安全波段的方法是获得1.5 μm激光的最有效的手段之一;非临界相位匹配的KTP OPO的主要优点是大的接受角和无走离,因此即使多纵模激光泵浦情况下也可以获得很高的转换效率.
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| 关 键 词： | 光参量振荡器 非稳腔 人眼安全 |
| 文章编号： | 1001-4322(2005)S0-0198-03 |
| 修稿时间： | 2004-11-22 |
high brightness eye safe KTP OPO |
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| BAOZhao ri-ge-tu,JIANG Dong-sheng,ZHOU Shou-huan. high brightness eye safe KTP OPO[J]. High Power Laser and Particle Beams, 2005, 17(Z1): 198-200 |
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| Authors: | BAOZhao ri-ge-tu JIANG Dong-sheng ZHOU Shou-huan |
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| Abstract: | The KTP OPO was studied for frequency conversion of Nd-doped lasers to longer wavelengths and can be used as the basis for eye-safe lidar systems operating in the 1 550 nm wavelength region. One of the major advantages of OPO based on KTP and its isomorphs is the ability to operate with non-critical phase matching (NCPM). The large acceptance angle for NCPM permits efficient OPO operation even with multi-transverse-mode pump lasers. The operation efficiency of KTP optical parametric oscillators (OPO) pumped by multimode Nd:YAG lasers was recently demonstrated. The highest pulse energy(400 mJ )and highest average-power signal output(12 W) of signal output at 1571 nm from a singly-resonant OPO with a 1 J, 30 Hz, Nd:YAG pump laser were obtained. The results provide a clear demonstration that very high pump-to-signal energy conversion (up to 40%) can be obtained from an OPO even with highly multi-transverse-mode pump lasers. |
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