Performance of gain-switched all-solid-state quasi-continuous-wave tunable Ti:sapphire laser system
Ding Xin(丁欣)a)b)c)†, Zhang Heng(张衡)a)b)c), Wang Rui(王睿)a)b)c), Yu Xuan-Yi(禹宣伊)d), Wen Wu-Qi(温午麒)a)b)c), Zhang Bai-Gang(张百钢)a)b)c), Wang Peng(王鹏)a)b)c), and Yao Jian-Quan(姚建铨)a)b)c)
a College of Precision Instrument and Opto-Electronics Engineering, Institute of Laser and Opto-Electronics, Tianjin University, Tianjin 300072, China; b Key Laboratory of Opto-Electronics Information Science and Technology, Ministry of Education, Tianjin 300072, China; cCooperated Institute of Nankai University and Tianjin University, Tianjin 300072, China; d College of Physics Science, Photonics Research Center, Nankai University, Tianjin 300071, China
Abstract 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 950 nm can be achieved. It has a maximum average output power of 5.6 W at 800 nm and the pulse width of 13.2 ns, giving an optical conversion efficiency of 25.5% from the 532 nm pump laser to the Ti:sapphire laser.
Received: 12 January 2008
Revised: 23 June 2008
Accepted manuscript online:
PACS:
42.55.Rz
(Doped-insulator lasers and other solid state lasers)
(Efficiency, stability, gain, and other operational parameters)
Fund: 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) and Tianjin Applied Fundamental Research
Project (Grant No 07JCZDJC05900).
Cite this article:
Ding Xin(丁欣), Zhang Heng(张衡), Wang Rui(王睿), Yu Xuan-Yi(禹宣伊), Wen Wu-Qi(温午麒), Zhang Bai-Gang(张百钢), Wang Peng(王鹏), and Yao Jian-Quan(姚建铨) Performance of gain-switched all-solid-state quasi-continuous-wave tunable Ti:sapphire laser system 2008 Chin. Phys. B 17 3759
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