Performance of gain-switched all-solid-state quasi-continuous-wave tunable Ti:sapphire laser system  

作　　者：丁欣 张衡 王睿 禹宣伊 温午麒 张百钢 王鹏 姚建铨 

机构地区：[1]College of Precision Instrument and Opto-Electronics Engineering,Institute of Laser and Opto-Electronics,Tianjin University [2]Key Laboratory of Opto-Electronics Information Science and Technology,Ministry of Education [3]Cooperated Institute of Nankai University and Tianjin University [4]College of Physics Science, Photonics Research Center, Nankai University

出　　处：《Chinese Physics B》2008年第10期3759-3764,共6页中国物理B（英文版）

基　　金：Project supported in part by the National Natural Science Foundation of China (Grant Nos 60637010 and 60671036);the National Basic Research Program of China (Grant No 2007CB310403);Tianjin Applied Fundamental Research Project (Grant No07JCZDJC05900)

摘　　要：We have made a gain-switched all-solid-state quasi-continuous-wave （QCW） tunable Ti：sapphire laser system, which is pumped by a 532 nm intracavity frequency-doubled Nd：YAG laser. Based on the theory of gain-switching and the study on the influencing factors of the output pulse width, an effective method for obtaining high power and narrow pulse width output is proposed. Through deliberately designing the pump source and the resonator of the Ti：sapphire laser, when the repetition rate is 6 kHz and the length of the cavity is 220 mm, at an incident pump power of 22 W, the tunable Ti：sapphire laser from 700 to 950nm can be achieved. It has a maximum average output power of 5.6W at 800nm and the pulse width of 13.2 ns, giving an optical conversion efficiency of 25.5% from the 532 mn pump laser to the Ti：sapphire laser.We have made a gain-switched all-solid-state quasi-continuous-wave （QCW） tunable Ti：sapphire laser system, which is pumped by a 532 nm intracavity frequency-doubled Nd：YAG laser. Based on the theory of gain-switching and the study on the influencing factors of the output pulse width, an effective method for obtaining high power and narrow pulse width output is proposed. Through deliberately designing the pump source and the resonator of the Ti：sapphire laser, when the repetition rate is 6 kHz and the length of the cavity is 220 mm, at an incident pump power of 22 W, the tunable Ti：sapphire laser from 700 to 950nm can be achieved. It has a maximum average output power of 5.6W at 800nm and the pulse width of 13.2 ns, giving an optical conversion efficiency of 25.5% from the 532 mn pump laser to the Ti：sapphire laser.

关 键 词：gain-switched ALL-SOLID-STATE QUASI-CONTINUOUS-WAVE narrow pulse width 

分 类 号：TN248[电子电信—物理电子学]