.High power output quasi-continuous-wave nanosecond optical parametric generator based on periodically poled lithium niobate[J].Optoelectronics Letters,2005,1(1):10-12 High power output quasi-continuous-wave nanosecond optical parametric generator based on periodically poled lithium niobate LU Yang ZHANG Bai-gang XU De-gang DING Xin WANG Peng ZHANG Tie-li JI Feng YAO Jian-quan [1]College of Precision Instrument oncl Optoelectronics Engineering, Institute of Laser and Optoelectronics , Tianjin University, Tianjin 300072, China [2]Cooperated Institute of Nankai University and Tianjin University, Tianjin 300072, China [3]Key Laboratory of Optoelectric Information Science and Technology, Ministry of Education , Tionjin University, Tionjin 300072, China Abstract:       We report on a high power output quasi-continuous-wave nanosecond optical parametric generator (OPG) of congruent periodically poled lithium niobate (PPLN) pumped by a 1064 nm acousto-opticallyQ-switched Nd: YVO4 laser (duration: 70 ns, repetition rate: 45 kHz, spatial beam qualityM 2< 1.3). The OPG consists of a 38.7 mm long PPLN crystal with a domain period of 28.93 μ. With 5.43 W of average pump power the maximum average output power is 991 mW at 1517.1 nm signal wave of the PPLN OPG. Supported by the National Natural Science Foundation of China (Grant No 60278001 and No 10474071), the Science & Technology Cooperation Foundation of Nankai University and Tianjin University, the Ministry of Education, the Ph. D. Programs Foundation of Ministry of Education of China (Grant No 2020056001), Tianjin municipal technological development planning and the Outstanding Doctorate Dissertation of Tianjin University [2001]01. Hits: 3607 Download times: 187 View Full Text    Download reader