中国激光, 2016, 43 (12): 1208002, 网络出版: 2016-12-09
2.05 μm单谐振纳秒脉冲光参量振荡器特性研究 下载: 595次
Characteristics of Single Resonant Nanosecond Pulse Optical Parametric Oscillator with Output Wavelength of 2.05 μm
摘要
报道了1064 nm单频激光抽运的KTP晶体外腔单谐振光参量振荡器(OPO),获得了波长为2.05 μm的纳秒激光脉冲输出。在平-平腔中,将2块II类相位匹配KTP晶体按走离补偿方式放置,在400 Hz重复频率下,抽运单脉冲能量达到5 mJ时获得了单脉冲能量为0.9 mJ的2.05 μm信号光输出,其脉宽约为3.7 ns,对应抽运光-信号光转换效率约为18%,光束质量因子M2在x、y方向分别为2.08、3.03。
Abstract
A KTP crystal extra-cavity single-resonant optical parametric oscillator (OPO) pumped by 1064 nm single-frequency laser is reported, and the nanosecond laser pulse output with wavelength of 2.05 μm is obtained. In the plane-parallel cavity, two type II phase-matched KTP crystals are placed in walk-off-compensated mode. When the pump single pulse energy reaches 5 mJ at repetition frequency of 400 Hz, a 2.05 μm signal laser output with single pulse energy of 0.9 mJ is obtained, whose pulse width is about 3.7 ns, the corresponding conversion efficiency is about 18% from pump light to signal light, and the beam quality factor M2 are 2.08, 3.03 in x, y directions, respectively.
谢小兵, 李世光, 朱小磊, 张俊旋, 董怡静, 陈卫标. 2.05 μm单谐振纳秒脉冲光参量振荡器特性研究[J]. 中国激光, 2016, 43(12): 1208002. Xie Xiaobing, Li Shiguang, Zhu Xiaolei, Zhang Junxuan, Dong Yijing, Chen Weibiao. Characteristics of Single Resonant Nanosecond Pulse Optical Parametric Oscillator with Output Wavelength of 2.05 μm[J]. Chinese Journal of Lasers, 2016, 43(12): 1208002.