Experimental study on a high conversion efficiency, low threshold, high-repetition-rate periodically poled lithium niobate optical parametric generator.
A high-conversion-efficiency, low-threshold, quasi-continuous-wave optical parametric generator (OPG) based on a periodically poled lithium niobate (PPLN) crystal is presented. Pumped by an acousto-optically Q-switched 1064 nm Nd:YAG laser with a power output of 848 mW, the OPG generated an output power of 452 mW for the signal and the idle waves, achieving an internal conversion efficiency of 62.7% and a slope efficiency of 75.6%. To the best of our knowledge, this is the highest efficiency ever reported for single-pass, quasi-continuous-wave OPGs by using periodically poled crystals.
Zhao
Pu
P
Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, PR China. pzhao1981@yahoo.com
Zhang
Baigang
B
Li
Enbang
E
Zhou
Rui
R
Xu
Degang
D
Lu
Yang
Y
Zhang
Tieli
T
Ji
Feng
F
Zhu
Xueyu
X
Wang
Peng
P
Yao
Jianquan
J
D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004867:Equipment Design; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D009556:Niobium; D009991:Oscillometry / Q000295:instrumentation*; D010087:Oxides
D010087:Oxides; D009556:Niobium; C091692:lithium niobate