中国物理B ›› 2004, Vol. 13 ›› Issue (9): 1454-1459.doi: 10.1088/1009-1963/13/9/016

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Analysis of tunable picosecond pulse generation from a distributed feedback Ti:sapphire laser

洪治, 姚小科   

  1. State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2003-12-29 修回日期:2004-04-05 出版日期:2005-06-21 发布日期:2005-06-21
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60078002).

Analysis of tunable picosecond pulse generation from a distributed feedback Ti:sapphire laser

Hong Zhi (洪治), Yao Xiao-Ke (姚小科)   

  1. State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
  • Received:2003-12-29 Revised:2004-04-05 Online:2005-06-21 Published:2005-06-21
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60078002).

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摘要： 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.

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.

Key words: picosecond pulse, distributed feedback, Ti:sapphire laser, tunable

中图分类号:  (Doped-insulator lasers and other solid state lasers)

  • 42.55.Rz
42.60.By (Design of specific laser systems) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.60.Fc (Modulation, tuning, and mode locking) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)