Efficient Compound-Cavity Eye-Safe KTP OPO at 1.57 μm Pumped by an Electro-Optic Q-Switched Nd：YAG Laser

作     者：钟凯 王与烨 徐德刚 耿优福 汪静丽 王鹏 姚建铨 

作者机构：College of Precision Instrument and Opto-Electronic Engineering Institute of Laser and Opto-Electronics Tianjin University Tianjin 300072 Key Laboratory of Opto-Electronics Information Science and Technology Ministry of Education Tianjin 300072 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2009年第26卷第6期

页      面：147-150页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0702[理学-物理学] 

基　　金：Supported by the Research Fund for the Doctoral Program of Higher Education under Grant No 20070420118  the Tianjin Municipal Primary Application and Frontier Technology Research Plan under Grant No 07JCYBJC06200  the National Basic Research Programme of China under Grant No 2007CB310403  and the National Natural Science Foundation of China under Grant No 60801017 

摘      要：An efficient high-energy eye-safe optical parametric oscillator （OPO） based on a type-Ⅱ non-critically phasematched KTP crystal is demonstrated. The KTP OPO is pumped by a quasi-cw diode side-pumped electrooptic Q-switched Nd：YAG laser in a compound-cavity configuration. The maximum output energy of the signal wavelength at 1.57 μm b 66.5 m J, corresponding to an electrical-to-optical conversion efficiency of 4.47% and an optical-to-optical conversion efficiency of 12.1%. The pulse width （FWHM） is about 3.6 ns with a peak power of 18.5 MW. The output energy is insensitive to repetition rate and demonstrates good stability.