A tunable optical parametric generator by using a quasi-phase-matched crystal with different wedge angles  

作　　者：张铁犁 张百钢 李海峰 纪峰 路洋 赵欣 王鹏 姚建铨 

机构地区：[1]College of Precision Instrument and Opto-Electronics Engineering Institute of Laser and Opto-Eletronics,Tianjin University,Tianjin 300072 Cooperated Institute of Nankai University and Tianjin University,Tianjin 300072 Key Laboratory of Opto-Electric Information Science and Technology (Ministry of Education),Tianjin University,Tianjin 300072

出　　处：《Chinese Optics Letters》2006年第4期234-236,共3页中国光学快报（英文版）

基　　金：This work was supported in part by the National Natural Science Foundation of China (No. 60278001 and 10474071)the Ministry of Education of China, the National Research Foundation for the Doctoral Program of Ministry of Education of China, and Tianjin Municipal Technological Development Plan.

摘　　要：We report a tunable quasi-phase-matched optical parametric generator （OPG） with different wedge angles, pumped by a commercially available Q-switched diode-pumped Nd：YVO4 laser with a repetition of 50 kHz. The nonlinear crystal is a periodically poled MgO-doped LiNbO3 （PPMgOLN） with a period of 30 μm. A congruent bulk LiNbO3 （LN） with three different wedge angles of 0°, 4°, and 9° is placed in front of PPMgOLN. Rapid tuning has been achieved by simply moving the LN crystal along its lateral direction and over 60-mW average signal output power was obtained in the whole wavelength tuning range of 1539-1570 nm.We report a tunable quasi-phase-matched optical parametric generator （OPG） with different wedge angles, pumped by a commercially available Q-switched diode-pumped Nd：YVO4 laser with a repetition of 50 kHz. The nonlinear crystal is a periodically poled MgO-doped LiNbO3 （PPMgOLN） with a period of 30 μm. A congruent bulk LiNbO3 （LN） with three different wedge angles of 0°, 4°, and 9° is placed in front of PPMgOLN. Rapid tuning has been achieved by simply moving the LN crystal along its lateral direction and over 60-mW average signal output power was obtained in the whole wavelength tuning range of 1539-1570 nm.

关 键 词：A tunable optical parametric generator by using a quasi-phase-matched crystal with different wedge angles LN OPG 

分 类 号：O437[机械工程—光学工程]