title: Continuous-wave mid-infrared intra-cavity singly resonant PPLN-OPO under 880 nm in-band pumping.
abstract: We report herein a continuous-wave mid-infrared intra-cavity singly resonant optical parametric oscillator (ICSRO) which is the first example of ICSRO that utilize in-band pumped Nd-doped vanadate laser as pump source. A 1064 nm Nd:YVO₄ laser in-band pumped by 880 nm LD and a periodically poled lithium niobate (PPLN) crystal are employed as the parent pump laser and the nonlinear medium, respectively. The idler output wavelength tuning range is 3.66-4.22 µm. A maximum output power of 1.54 W at 3.66 µm is obtained at absorbed pump power of 21.9 W, with corresponding optical efficiency being 7.0%. The control experiment of ICSRO under 808 nm traditional pumping is also carried out. The results show that in-band pumped ICSRO has better performance in terms of threshold, power scaling, efficiency and power stability than ICSRO traditionally pumped at 808 nm.
authors.affiliation: College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics, Tianjin University, Tianjin 300072, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Sheng
authors.forename: Xin
authors.initials: X
authors.lastname: Ding
authors.forename: Chunpeng
authors.initials: C
authors.lastname: Shi
authors.forename: Sujia
authors.initials: S
authors.lastname: Yin
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Ce
authors.initials: C
authors.lastname: Shang
authors.forename: Xuanyi
authors.initials: X
authors.lastname: Yu
authors.forename: Wuqi
authors.initials: W
authors.lastname: Wen
authors.forename: Jianquan
authors.initials: J
authors.lastname: Yao
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007259:Infrared Rays; D053844:Lasers, Solid-State