光学学报, 2011, 31 (6): 0614001, 网络出版: 2011-05-11   

基于周期极化钽酸锂晶体的光参变振荡器技术研究

Research on Optical Parametric Oscillator Based on Periodically Poled LiTaO3 Crystal
作者单位
中国工程物理研究院应用电子学研究所, 四川 绵阳 621900
摘要
对基于周期极化钽酸锂(PPLT)晶体的光参变振荡器(OPO)技术进行了理论分析和实验研究,通过三波混频耦合波方程组,计算了PPLT-OPO的波长调谐曲线。分别研究了信号光单谐振结构(SSRO)和闲频光单谐振结构(ISRO)下,PPLT-OPO的中红外激光输出特性。当NdYAG激光器输出的1.064 μm激光抽运功率为48 W,重复频率为5 kHz时,SSRO和ISRO输出的3.9 μm中红外激光功率分别为5.78 W和5.07 W,相应的转换效率分别为12%和10.6%,ISRO输出的3.9 μm激光的近场光斑分布和光束质量优于SSRO的输出结果。
Abstract
The theoretical analysis and experimental research of the optical parametric oscillator (OPO) based on periodically poled LiTaO3 (PPLT) crystal are presented. The wavelength tuning curves of PPLT-OPO are calculated through the coupling equations of the three-wave mixing. The output characters of signal singly resonant oscillator (SSRO) and idler singly resonant oscillator (ISRO) are studied. When the pump power of the NdYAG 1.064 μm laser is 48 W with a repetition rate of 5 kHz, the output powers of 3.9 μm laser from SSRO and ISRO are 5.78 W and 5.07 W, and corresponding conversion efficiencies are 12% and 10.6% respectively. The near-field distribution and beam quality of the 3.9 μm laser from ISRO are better than those from SSRO.
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魏星斌, 彭跃峰, 王卫民, 陈兴无, 王春华, 谢刚. 基于周期极化钽酸锂晶体的光参变振荡器技术研究[J]. 光学学报, 2011, 31(6): 0614001. Wei Xingbin, Peng Yuefeng, Wang Weimin, Chen Xingwu, Wang Chunhua, Xie Gang. Research on Optical Parametric Oscillator Based on Periodically Poled LiTaO3 Crystal[J]. Acta Optica Sinica, 2011, 31(6): 0614001.

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