Nd:YVO_4复合腔激光器双波长激光输出及腔内和频研究  

Investigation on a compound resonator Nd:YVO_4 laser with dual-wavelength output and intracavity sum-frequency mixing

作　　者：王加贤[1] 张峻诚[1] 苏培林[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建泉州362021

出　　处：《强激光与粒子束》2008年第12期1954-1958,共5页High Power Laser and Particle Beams

基　　金：福建省自然科学基金项目(A0610023)

摘　　要：采用两个重叠的共线支腔构成的三镜复合腔,实现LD泵浦的Nd:YVO4激光器的1 064 nm和1 342 nm双波长激光运转。根据双波长振荡阈值相等条件,数值计算了1 064 nm支腔和1 342 nm支腔的腔长、支腔的输出耦合镜透过率之间的关系。合理选择两个支腔的参数,当泵浦功率13 W时,获得1 064 nm激光功率1.59 W,1 342 nm激光功率1.17 W的双波长激光输出。在满足腔内1 064 nm和1 342 nm双波长光子数密度相等的条件下,计算了腔内和频的复合腔Nd:YVO4激光器的腔参数。采用Ⅱ类临界相位匹配KTP晶体作为和频器件,当808 nm泵浦光功率为12 W时,获得340 mW的和频593 nm激光输出。A three-mirror compound configuration formed by two overlapping collinear cavities was used to achieve both 1 064 nm and 1 342 nm emission of an LD pumped Nd= YVO4 laser. According to the condition that the dual-wavelength laser oscillations possess the same threshold, the relations of cavity length and transmissivity at the output coupler of 1 064 nm cavity branch with that of 1 342 nm cavity branch was numerically calculated. The dual-wavelength lasers with 1.59 W output power at 1 064 nm and 1.17 W output power at 1 342 nm was obtained at the pump power of 13 W when the two cavity branches were optimized. The parameters of the compound resonator Nd：YVO4 laser with the intracavity sum-frequency mixing was calculated under the condition that the photon number densities of 1 064 nm and 1 342 nm lasers in the resonator was equal. The output power of 593 nm laser was 340 mW at the pump power of 12 W using type-Ⅱ critical phase match KTP crystal as a sum-frequency mixing device.

关 键 词：ND:YVO4激光器 复合腔 双波长输出 和频激光 

分 类 号：TN248.1[电子电信—物理电子学]