强激光与粒子束, 2013, 25 (4): 805, 网络出版: 2013-03-27
新型非临界相位匹配KTA-OPO 2 μm激光器
New type of 2 μm laser source based on non-critical phase matching KTA-OPO
2 μm波段 光参量振荡器 KTA晶体 非临界相位匹配 2 μm waveband optical parametric oscillator KTA crystal non-critical phase match
摘要
首次提出了一种基于非临界相位匹配KTA光参量振荡的新型2 μm脉冲激光技术。采用激光二极管(LD)端面泵浦Nd:YVO4晶体实现1.3 μm振荡, 腔内泵浦非临界相位匹配切割的KTA晶体, 初步实现了超过1 W的2.1 μm波段激光输出, 光光转化效率10%, 脉宽3.4 ns (30 kHz)。相对于其他方式获得的2 μm波段激光, 具有脉宽窄、峰值高、谱线纯等优点, 是一种获得2 μm波段激光的有效新途径。
Abstract
A new approach to outputting 2 μm light was proposed based on non-critical phase matching KTA-OPO intra-cavity pumped by Nd:YVO4 crystal laser. A signal light with a power exceeding 1 W at 2093 nm is obtained with a diode-to-signal efficiency up to 10%. The short pulse width is about 3.4 ns at 30 kHz and the spectrum width at 2 μm waveband is only about 1 nm. The results show that this approach is also an efficient way to achieve 2 μm pulsed laser with high peak power.
凤正荣, 朱海永, 段延敏, 唐定远, 王鸿雁. 新型非临界相位匹配KTA-OPO 2 μm激光器[J]. 强激光与粒子束, 2013, 25(4): 805. Feng Zhengrong, Zhu Haiyong, Duan Yanmin, Tang Dingyuan, Wang Hongyan. New type of 2 μm laser source based on non-critical phase matching KTA-OPO[J]. High Power Laser and Particle Beams, 2013, 25(4): 805.
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