Sheng Quan, Ding Xin, Shi Chunpeng, Yin Sujia, Li Bin, Shang Ce, Yu Xuanyi, Wen Wuqi, Yao Jianquan
College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics, Tianjin University, Tianjin 300072, China.
Opt Express. 2012 Mar 26;20(7):8041-6. doi: 10.1364/OE.20.008041.
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.
我们在此报告一种连续波中红外腔内单共振光学参量振荡器（ICSRO），它是以带内泵浦掺钕钒酸盐激光器作为泵浦源的首个ICSRO实例。分别采用由880 nm激光二极管带内泵浦的1064 nm Nd:YVO₄激光器作为主泵浦激光器，以及周期极化铌酸锂（PPLN）晶体作为非线性介质。闲频光输出波长调谐范围为3.66 - 4.22 µm。在吸收泵浦功率为21.9 W时，在3.66 µm处获得了1.54 W的最大输出功率，相应的光效率为7.0%。还进行了808 nm传统泵浦下的ICSRO对照实验。结果表明，与808 nm传统泵浦的ICSRO相比，带内泵浦的ICSRO在阈值、功率缩放、效率和功率稳定性方面具有更好的性能。
