LD泵浦和频593 nm黄光激光器

报道了一种单LD泵浦Nd:YVO4双晶体腔内和频实现黄光激光的有效方法，并对其进行了理论分析、实验装置的设计和实验验证。该装置由半导体激光器、光学耦合系统(CO)、Nd:YVO4镀膜晶体、镀高反膜的平凹镜、镀增透膜的LBO、镀高透膜的全反镜组成。实验采用V型谐振腔，在中心波长为808.7 nm、5 W抽运功率下，利用Ⅰ类临界相位匹配LBO作为和频晶体，获得了244 mW、593 nm的黄光输出，光-光转换率为4.9%，激光不稳定度为5%。实验结果表明:采用V型谐振腔进行腔内和频，可以获得593 nm的黄光激光，并且结构紧凑、转换效率高，可以应用到很多种和频激光器中。

LD-pumped sum-frequency in 593 nm yellow laser

An efficient method of 593 nm yellow laser with a single LD pump source and Nd:YVO4 double crystals was reported.The theory was analyzed,the experiment device was designed and the experiment result was verified.The device was composed of laser diode,optical coupling system,Nd:YVO4 crystals,plan-curved mirror,LBO and totally reflecting mirror.By using V-type resonant cavity,with incident pump source with the 5 W power and the 808.7 nm wavelength,the experiment adopts typeⅠcritical phase-matched LBO as sum-frequency crystal,and the 244 mW yellow laser at 593 nm was obtained.The optical to optical conversion efficiency was 4.9%,the laser instability was about 5%.The experiment result shows that the intra-cavity sum-frequency in V-type resonant cavity can obtain 593 nm laser,and the method has structure compact and high conversion efficiency advantages,and can be used in many sum-frequency laser.