The thermal effect in diode-end-pumped continuous-wave 914-nm Nd:YVO_4 laser  

作　　者：Yan Ren-Peng Yu Xin Chen De-Ying Chen Fei Li Xu-Dong Ma Yu-Fei Yu Jun-Hua 闫仁鹏;于欣;陈德应;陈飞;李旭东;马欲飞;于俊华(National Key Laboratory of Tunable Laser Technology,Harbin Institute of Technology,Harbin 150080,China;Institude of Opto-electronics,Harbin Institute of Technology,Harbin 150080,China)

机构地区：[1]National Key Laboratory of Tunable Laser Technology,Harbin Institute of Technology,Harbin 150080,China [2]Institude of Opto-electronics,Harbin Institute of Technology,Harbin 150080,China

出　　处：《Chinese Physics B》2012年第2期338-344,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.60978016);the Technological Project of Heilongjiang Province,China (Grant No.GC06A116);the Fundamental Research Funds for the Central Universities,China (Grant No.HIT.NSRIF.201165)

摘　　要：The thermal effect and the heat generation in diode-end-pumped continuous-wave 914-nm Nd：YVO4 lasers are investigated in detail. A theoretical model of a diode end-pumped solid-state laser is constructed to analyse the influence of fractional thermal loading on the thermal effect in the Nd：YVO4 laser based on finite element analysis. The thermal focal lengths and the end-surface deformations of laser rods in Nd：YVO4 quasi-three-level and four-level lasers are measured and compared with the results obtained by ordinary interferometry for the demonstration of higher thermal loading in 914-nm laser. Finally the fractional thermal loading in the Nd：YVO4 quasi-three-level laser is calculated by matching the experimental and the simulated end deformations.The thermal effect and the heat generation in diode-end-pumped continuous-wave 914-nm Nd：YVO4 lasers are investigated in detail. A theoretical model of a diode end-pumped solid-state laser is constructed to analyse the influence of fractional thermal loading on the thermal effect in the Nd：YVO4 laser based on finite element analysis. The thermal focal lengths and the end-surface deformations of laser rods in Nd：YVO4 quasi-three-level and four-level lasers are measured and compared with the results obtained by ordinary interferometry for the demonstration of higher thermal loading in 914-nm laser. Finally the fractional thermal loading in the Nd：YVO4 quasi-three-level laser is calculated by matching the experimental and the simulated end deformations.

关 键 词：fractional thermal loading Nd：YVO4 914-nm Nd：YVO4 laser 

分 类 号：TN248[电子电信—物理电子学]