880nm共振抽运连续波内腔单谐振光学参量振荡器及其逆转换  

Continuous-Wave Tunable Intra-Cavity Single Resonance Optical Parametric Oscillator under 880 nm in-Band Pumping and the Inverse Conversion

作　　者：丁欣[1,2] 尚策[1,2] 盛泉 李斌[1,2] 范琛[1,2] 张海永[1,2] 禹宣伊[3] 温午麒[1,2] 姚建铨[1,2] 

机构地区：[1]天津大学激光与光电子研究所,天津大学精仪学院,天津300072 [2]天津大学光电信息技术科学教育部重点实验室,天津300072 [3]南开大学物理科学学院,天津300071

出　　处：《中国激光》2013年第6期77-82,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(60978021,61178028);教育部新世纪优秀人才支持计划(NCET-10-0610)资助课题

摘　　要：报道了880nm激光二极管(LD)共振抽运的连续波(CW)Nd:YVO4-PPLN内腔单谐振光学参量振荡器(ICSRO)。在21.9W抽运功率下,获得了1.54W的3.66μm CW中红外闲频光输出,光-光转换效率为7.0%;与808nm传统抽运相比,共振抽运ICSRO在振荡阈值、输出功率、转换效率和功率稳定性等方面都显示出明显优势。针对高抽运功率下逆转换过程影响单谐振光学参量振荡器(SRO)转换效率的问题,研究了振荡信号光的耦合输出透射率对SRO阈值和下转换效率的影响。通过提高振荡光输出镜透射率优化SRO阈值,可在高抽运功率下保持下转换效率的同时获得高效的信号光输出;21.4W抽运功率下同时获得1.54W闲频光和5.03W信号光输出,总提取效率为30.2%。A continuous-wave （CW） tunable Nd：YVO4-PPLN intra-cavity resonance single oscillator （ICSRO） under 880 nm laser diode （LD） resonance pumping is reported. 1.54 W maximum idler output power at 3.66 grn is obtained under the pump power of 21.9 W, corresponding to an optical-optical conversion efficiency of 7.0%. The ICSRO under 880 nm in-band pumping shows significant improvements in threshold, output power, conversion efficiency and power stability compared with that under 808 nm traditional pumping. Since the back-conversion process harms the single resonance oscillator （SRO） down-conversion efficiency under high pump power, the influence of output coupler transmittance on SRO threshold and down-conversion efficiency is investigated. By increasing the output coupling of resonant signal to raise the SRO threshold, the down-conversion efficiency can be maintained under high pump power and efficient signal output can be obtained. 1.54 W idler output and 5.03 W signal output are obtained under the pump power of 21.4 W, corresponding to a total extraction efficiency of 30.2 %.

关 键 词：非线性光学 内腔光学参量振荡器 共振抽运 连续波 中红外 逆转换 

分 类 号：O437.4[机械工程—光学工程]