title: Experimental study on a high conversion efficiency, low threshold, high-repetition-rate periodically poled lithium niobate optical parametric generator.
abstract: 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.
authors.affiliation: Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, PR China. pzhao1981@yahoo.com
authors.forename: Pu
authors.initials: P
authors.lastname: Zhao
authors.forename: Baigang
authors.initials: B
authors.lastname: Zhang
authors.forename: Enbang
authors.initials: E
authors.lastname: Li
authors.forename: Rui
authors.initials: R
authors.lastname: Zhou
authors.forename: Degang
authors.initials: D
authors.lastname: Xu
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu
authors.forename: Tieli
authors.initials: T
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Ji
authors.forename: Xueyu
authors.initials: X
authors.lastname: Zhu
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Jianquan
authors.initials: J
authors.lastname: Yao
mesh_terms: D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004867:Equipment Design; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D009556:Niobium; D009991:Oscillometry / Q000295:instrumentation*; D010087:Oxides
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate