利用单共振光学参量振荡器产生1.5μm连续单频激光  

Continuous-Wave Single-Frequency 1.5μm Laser Generated by a Singly Resonant Optical Parametric Oscillator

作　　者：李鹏[1] 马亚云 聂丹丹[1] 冯晋霞[1] 张宽收(指导)[1] 

机构地区：[1]山西大学光电研究所,量子光学与光量子器件国家重点实验室,山西太原030006

出　　处：《中国激光》2014年第8期41-44,共4页Chinese Journal of Lasers

基　　金：国家重大科学研究计划(2010CB923101);国家自然科学基金(61227015;61121064;11204167);国家重大仪器专项(2011YQ030127)

摘　　要：报道了利用高功率全固态连续单频1.06μm激光器,抽运由准相位匹配晶体构成的单共振光学参量振荡器(SRO),产生光束质量接近衍射极限的1.5μm连续单频激光的实验研究。实验获得了输出功率为3.2W的连续单频1.5μm激光,光光转换效率达40%,SRO的阈值抽运功率仅为2.5W。当把SRO腔长主动锁定到共焦法布里-珀罗(F-P)腔的共振峰上,信号光的频率稳定性优于3MHz(1min)、功率稳定性优于±0.5%(15min)。该系统的激光波长位于量子态传输波段,可用于研究实用化量子信息处理系统。A continuous-wave （CW） single-frequency 1. 5 μm laser source is obtained by a singly resonant optical parametric oscillator （SRO） based on periodically poled lithium niobate. The SRO is pumped by a CW single-frequency Nd.＂ YVO4 laser at 1.06 μm with the pump threshold of 2.5 W. 3.2 W of CW single-frequency signal laser at 1.5 μm is achieved at pump power of 8 W with the optical conversion efficient of 40 %. When the SRO is actively locked to the centre frequency of a Fabry-Perot cavity, the power stability is better than ± 0.5 % in 15 minutes and frequency stability is better than 3 MHz in 1 minute. The center wavelength of the laser system is in the wave band of quantum states transmission, so this kind of system can be employed for researches of practical quantum information processing.

关 键 词：非线性光学 连续单频1 5μm激光 单共振光学参量振荡器 高效率 频率稳定 

分 类 号：O437.1[机械工程—光学工程]