高效率侧面泵浦Nd:YAG激光器  

Highly efficient side-pumped Nd:YAG laser

作　　者：李含[1] 谷开慧[1] 齐晓宇[1] 赵帅 LI Han;GU Kai-hui;QI Xiao-yu;ZHAO Shuai(Department of Optical and Electronical Science,College of Optical and Electronical Information,Changchun University of Science and Technology,Changchun 130000,China)

机构地区：[1]长春理工大学光电信息学院光电科学分院,吉林长春130000

出　　处：《激光与红外》2018年第11期1363-1367,共5页Laser & Infrared

基　　金：吉林省教育厅"十三五"科学技术研究项目资助

摘　　要：太阳能是地球上资源最为丰富的一种能源,但是其能量密度较低,不足以实现泵浦激光器的需求。为了实现利用太阳能泵浦激光器的目的,需要对太阳光进行高效聚焦,来达到泵浦激光器能量阈值的要求。我们采用三维复合抛物镜(3D-CPC)与菲涅尔透镜相结合的聚光系统来实现太阳光的高效聚焦,实验中将3D-CPC聚光系统的出口放置在激光器椭圆柱形泵浦腔的一个焦点处,聚焦后太阳光高效耦合进入激光器谐振腔,实现了聚光比的大幅度提升。利用此聚光系统与椭圆柱形泵浦腔的结合,泵浦Nd:YAG晶体,得到6.2W的激光功率输出,光收集效率达到6. 2 W/m^2。Solar energy is one of the most abundant sources of energy on earth, but its energy density is so low to meet the need of pumping lasers. In the paper, a highly efficient sunlight concentration system is proposed,which is com-posed by a Fresnel lens and a three-dimensional compound parabolic eoneentrator（3D - CPC）. With the help of the system, which is applied to the laser crystal, the solar concentration ratio is increased. The exit of the 3D - CPC is placed in one focus of an elliptical pump chamber,so the solar is coupled into the elliptical chamber,pumping Nd ： YAG laser media. By using the combination of 3D - CPC system and elliptical pump chamber,the laser power output of 6. 2 W is obtained, and the light collection efficiency reaches 6. 2 W/m^2.

关 键 词：太阳能 激光器 菲涅尔透镜 ND:YAG 复合抛物镜聚光器 

分 类 号：O432.12[机械工程—光学工程]