高功率LD侧面泵浦Nd_YAG激光器四镜折迭腔分析与设计.pdf

20 1 Vol. 20 No . 1 2004 3 JO RNAL OF TIANJIN INSTIT TE OF TECHNOLOGY Mar.2004 :2004) LD Nd:YAG 1 1, 2 1, 2 1 1 1 1 1,2 周建勇, 于意仲 , 姚建铨 , 陈 进, 温午麒, 李 君, 王 鹏, 周 睿 ( 1. , , 300072; 2. , 300072) : 运用ABCD 传输矩阵理论, 把增益介质作为类透镜处理, 对LD 侧面泵浦地Nd:YAG 激光器四镜折叠 进行 了分析,特别讨论了增益介质内部基模光斑半径和基模体积随泵浦功率变化的关系. 在此基础上得到了一组 的 优化参数, 能使激光器实现大基模体积热稳运转, 并很好地补偿了像散. : ; ; LD :TN248 :A Design on fourmirror folded cavity for highpower LD sidepumped Nd:YAG laser 1 1, 2 1,2 ZHOU Jia yo g , YU Yizho g , YAO Jia qua , 1 1 1 1 1, 2 CHEN Ji , WEN Wuqi , LI Ju , WANG Pe g , ZHOU Rui ( 1. College of Precisio I strume t a d OptoElectro ics E gi eeri g, I stitute of laser a d Optoelectro ics, Tia ji U iversity, Tia ji 300072, Chi a; 2. Cooperated I stitute of Na kai U iversity a dTia ji U iversity, Tia ji 300072, Chi a) Abstract: By usi g ABCD law, co sideri g laser medium as le slike medium, we a alyzed a fourmirror folded cavity used for LD sidepumped Nd:YAG laser was a alyzed, especially discussed the relatio ship betwee the fu dame tal mode radius or fu dame tal mode volume a d the pumped power i the laser medium. Based o the a alyzed results, a reso ator ca be operatedwith largevolume fu dame tal mode i a suitable stable regio a d good elimi ati g astig matism was realized. Keywords: le slike medium; fu dame tal mode volume; LD sidepump LD ,