LD端面抽运NdYAP腔内RTP-OPO1.65μm激光的研究.pdfVIP

第44卷第5期 红外与激光工程 2015年5月 Vol.44No.5 InfraredandLaserEngineering May2015 LD端面抽运 Nd:YAP腔内 RTP-OPO1.65滋m激光研究 邵振华，朱海永，叶彦林，段延敏，尉鹏飞，张 栋 (温州大学 物理与电子信息工程学院，浙江 温州 325035) 摘 要院报道了基于非临界相位匹配磷酸钛氧铷晶体(RTP)的光参量振荡激光性能研究。采用激光二 极管端面抽运Nd:YAP激光晶体，组成内腔式RTP-OPO 系统，对比了在不同声光调Q重复频率下的 信号光输出特性。在20kHz 重复频率和13.1W 的抽运入射功率下，获得平均功率1.1W 的1.65滋m 人眼安全激光的输出，光-光转化效率为8.4%；在重复频率为5kHz 时，获得了最窄脉4.4ns，最高单 脉冲峰值功率30.8kW。结果表明，基于RTP 晶体的OPO 变频是获得1.6滋m 波段激光的一种有效新 途径。 关键词院1.6滋m 波段激光； RTP 晶体； 非临界相位匹配； 光参量振荡 中图分类号院TN248.1 文献标志码院A 文章编号院1007-2276(2015)05-1397-05 1.65滋m RTP-OPO intra-cavity driven by LD end-pumped Nd:YAP laser Shao Zhenhua, Zhu Haiyong, Ye Yanlin, Duan Yanmin, Wei Pengfei, Zhang Dong (College of Physics and Electronic Information Engineering, Wenzhou University, Wenzhou 325035, China) Abstract: The performance of the optical parametric oscillator was reported, which was based on the non-critical phase matching of the arsenic acid potassium titanium oxide (RTP) crystal. The intra-cavity RTP-OPO system was driven by the LD end pumped Nd:YAP laser. The output characteristics of the signal light were compared at the different pulse repetition rates of the acousto-optic Q-switcher. The 1.65 滋m eye-safety laser was obtained when the incident diode pump power of 13.1 W and the pulse repetition frequency of 20 kHz, the maximum average output power was up to 1.1 W and which was achieved with the conversion efficiency of 8.4%. The shortest pulse width of 4.4 ns and the highest peak power of 30.8 kW were obtained when the pulse repetition rate was 5 kHz. The results show that the RTP crystal with the OPO frequency conversi