Design and performance of a composite Tm:YAG laser pumped by VBG-stabilized narrow-band laser diode

Dai Shu-Tao^{1, 2}, Huang Jian-Hong¹, Huang Hai-Zhou^{1, 2}, Wu Li-Xia¹, Li Jin-Hui¹, Deng Jing¹, Ge Yan¹, Lin Wen-Xiong^{1, †}

(color online) The focal length of thermal lens versus pump power.