915 nm激光二极管端面泵浦的高稳定性全固态355 nm紫外激光器  

355 nm all-solid state ultraviolet laser with high stability end-pumped by 915 nm laser diode

作　　者：侯杰 贾海旭 白雅苏拉 Hou jie;Jia Haixu;Baiya Sula(Beijing Huaan Technology Co.,Ltd.,Beijing 100176,China)

机构地区：[1]北京华岸科技有限公司,北京100176

出　　处：《激光与光电子学进展》2021年第19期228-234,共7页Laser & Optoelectronics Progress

摘　　要：报道了一种利用中心波长为915 nm的激光二极管(LD)泵浦的中心波长为355 nm的高稳定性全固态紫外激光器。在该激光器中,将中心波长为915 nm,线宽为5.3 nm的LD作为泵浦源,端面泵浦Nd∶YVO_(4)晶体,并将两块LBO晶体分别作为二倍频和三倍频晶体。采用V型平凸非稳腔结构和声光调Q方式,获得了稳定运行的中心波长为355 nm的全固态紫外激光器。当重复频率为30 kHz,泵浦功率为45 W时,紫外激光器的输出功率为3.7 W,脉冲宽度约为13 ns,光光转换效率约为8.2%,光束质量因子M^(2)小于1.2且在6 h运行时间内,输出功率稳定性(峰峰值)小于4.5%。A highly stable all-solid state ultraviolet laser with a center wavelength of 355 nm pumped by a laser diode(LD)with a center wavelength of 915 nm is demonstrated.LD with a central wavelength of 915 nm and linewidth of 5.3 nm is used as a pump source to end-pump Nd∶YVO^(4)crystal,and two LBO crystals are used as frequency doubling crystal and frequency tripling crystal in the laser.A stable all-solid state ultraviolet laser with a center wavelength of 355 nm is obtained by using V-shaped plane-convex unstable resonator structure and acoustooptic Q-switching mode.When the repetition rate is 30 kHz and the pump power is 45 W,the output power of the ultraviolet laser is 3.7 W,the pulse width is about 13 ns,optical-to-optical efficiency is 8.2%,the beam quality factor M^(2)is less than 1.2,and the output power stability(peak-to-peak value)is less than 4.5%in 6 hours of running time.

关 键 词：激光器 紫外激光器 915 nm 三倍频 355 nm LBO晶体 

分 类 号：TN248.1[电子电信—物理电子学]