红外与激光工程, 2018, 47 (6): 0606002, 网络出版: 2018-09-08  

直接输出高阶横模激光器的实验研究

Experimental investigation on direct generation of high order transverse mode laser
作者单位
华侨大学 信息科学与工程学院 福建省光传输与变换重点实验室, 福建 厦门 361021
摘要
从理论和实验上研究了从激光器直接输出高阶拉盖尔-高斯(LG)光束和高阶厄密-高斯(HG)光束。首先从理论上研究了高阶LG光束和高阶HG光束的光强分布特性, 并进行数值仿真。在实验研究中, 利用445 nm的蓝光半导体激光器端面泵浦Pr:YLF晶体, 在一定的条件下, 能从平凹腔直接输出640 nm波长高阶LG光束和高阶HG光束。实验结果表明: 从激光腔内输出的高阶LG光束和高阶HG光束与理论仿真基本一致。文中所报道的获得高阶模的实验装置简单, 对产生高阶光束及其应用具有较重要价值。
Abstract
Generation of higher-order Laguerre-Gaussian(LG) beams (vortex beams) and higher-order Hermite-Gaussian(HG) beams directly from the laser was theoretically and experimentally studied. The intensity distribution characteristics of higher-order LG beams and higher-order HG beams were theoretically studied, and the numerical simulation results were given. The Pr:YLF crystal was end-pumped by a 445 nm blue semiconductor laser, under certain conditions, the higher-order LG beam and the higher-order HG beam of wavelength 640 nm was directly delivered from the plano-concave laser cavity. The experimental results show that the higher-order LG beams and the higher-order HG beams from the laser cavity are in agreement with the theoretical simulation. It is shown that the device for generating the higher-order modes is simple. The results of this paper seems very important for generation of higher-order laser beams and their applications.

陈霞飞, 张凯伦, 陈子阳, 李小燕, 蒲继雄. 直接输出高阶横模激光器的实验研究[J]. 红外与激光工程, 2018, 47(6): 0606002. Chen Xiafei, Zhang Kailun, Chen Ziyang, Li Xiaoyan, Pu Jixiong. Experimental investigation on direct generation of high order transverse mode laser[J]. Infrared and Laser Engineering, 2018, 47(6): 0606002.

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