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

• 作 者: Shu-Tao Dai Jian-Hong Huang Hai-Zhou Huang Li-Xia Wu Jin-Hui Li Jing Deng Yan Ge Wen-Xiong Lin
• 机 构: Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on th
• 出 处: 中国物理B（英文版）
• 发表日期: 2017年7期
• 关键词: Tm∶YAG 2 μm laser thermal effects diode-pumped

A 2-μm composite Tm∶YAG laser pumped with a narrow-band laser diode was presented.The temperature distribution and thermal lens in the Tm∶YAG were numerically simulated by a finite element method and the results were used to design the special cavity,in order to achieve a high efficiency and stable output.With a 25-W incident pump power,we obtained a maximum output power of 11 W at 2018.5 nm,corresponding to a slope efficiency of 51.3％ and an optical-to-optical efficiency of 44.5％,respectively.The beam quality was measured to be M2x =1.8 and My2 =1.6.