LD端面抽运Nd:YAP腔内RTP-OPO1.65μm激光研究  

1.65 μm RTP-OPO intra-cavity driven by LD end-pumped Nd:YAP laser

作　　者：邵振华[1] 朱海永[1] 叶彦林 段延敏[1] 尉鹏飞[1] 张栋[1] 

机构地区：[1]温州大学物理与电子信息工程学院,浙江温州325035

出　　处：《红外与激光工程》2015年第5期1397-1401,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(10904143);浙江省公益技术应用研究计划(2015C34017);浙江省自然科学基金(LQ13F050004;LY14F050008);温州市公益性科技计划项目(G20140057)

摘　　要：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20 k Hz重复频率和13.1 W的抽运入射功率下,获得平均功率1.1 W的1.65μm人眼安全激光的输出,光-光转化效率为8.4%;在重复频率为5 k Hz时,获得了最窄脉4.4 ns,最高单脉冲峰值功率30.8 k W。结果表明,基于RTP晶体的OPO变频是获得1.6μm波段激光的一种有效新途径。The performance of the opti cal 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 μm 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 conversion system is a new way to get 1.6 μm wavelength laser.

关 键 词：1.6μm波段激光 RTP晶体 非临界相位匹配 光参量振荡 

分 类 号：O734[理学—晶体学]