Abstract A distributed feedback Ti:sapphire laser (DFTL) pumped by a 532nm Q-switched pulse is proposed for the generation of tunable picosecond pulses. With coupled rate equation model, the temporal characteristics of DFTL are obtained. The numerical solutions show that the DFTL pulse with a 50-ps pulse duration and as much as 3.5mJ pulse energy can be obtained under 40-mJ, 5-ns pulse pumping. The dependence of output pulse width on the laser crystal's length, pumping pulse duration, and pumping rate is also discussed in detail.
Received: 29 December 2003
Revised: 05 April 2004
Accepted manuscript online:
PACS:
42.55.Rz
(Doped-insulator lasers and other solid state lasers)
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60078002).
Cite this article:
Hong Zhi (洪治), Yao Xiao-Ke (姚小科) Analysis of tunable picosecond pulse generation from a distributed feedback Ti:sapphire laser 2004 Chinese Physics 13 1454
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