中国物理B ›› 2004, Vol. 13 ›› Issue (6): 871-876.doi: 10.1088/1009-1963/13/6/015

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Theoretical and experimental investigations of quasi-continuous wave diode array side-pumped Yb:YAG slab laser

吴海生, 闫平, 巩马理, 柳强   

  1. Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • 收稿日期:2003-09-24 修回日期:2004-02-05 出版日期:2005-07-05 发布日期:2005-07-05

Theoretical and experimental investigations of quasi-continuous wave diode array side-pumped Yb:YAG slab laser

Wu Hai-Sheng (吴海生), Yan Ping (闫平), Gong Ma-Li (巩马理), Liu Qiang (柳强)   

  1. Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • Received:2003-09-24 Revised:2004-02-05 Online:2005-07-05 Published:2005-07-05

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摘要： An analytical model of quasi-continuous wave (quasi-CW) diode array side-pumped slab laser for Yb:YAG oscillator in long-pulse free-running has been developed based on the CW model. In this model we first introduce a new parameter, pump pulse width, and make the model available for use in the quasi-CW model. We also give an analytical equation of laser delay time to calculate the laser pulse width. A detailed model is also presented for a new structure laser design, taking account of the geometry of Yb:YAG slab. A quasi-CW diode array side-pumped Yb:YAG slab laser is investigated theoretically and experimentally. Experiments yield a quasi-CW output energy up to 20.36 mJ with the laser pulse width of 654.55 μs at 1049 nm when the diode arrays operate at 25 Hz and 1 ms pulse width. The crystal dimensions are 3 mm×8 mm×1 mm and the doping density is 10 at.%. The experimental results are in good agreement with the predictions of the theoretical model.

Abstract: An analytical model of quasi-continuous wave (quasi-CW) diode array side-pumped slab laser for Yb:YAG oscillator in long-pulse free-running has been developed based on the CW model. In this model we first introduce a new parameter, pump pulse width, and make the model available for use in the quasi-CW model. We also give an analytical equation of laser delay time to calculate the laser pulse width. A detailed model is also presented for a new structure laser design, taking account of the geometry of Yb:YAG slab. A quasi-CW diode array side-pumped Yb:YAG slab laser is investigated theoretically and experimentally. Experiments yield a quasi-CW output energy up to 20.36 mJ with the laser pulse width of 654.55 μs at 1049 nm when the diode arrays operate at 25 Hz and 1 ms pulse width. The crystal dimensions are 3 mm×8 mm×1 mm and the doping density is 10 at.%. The experimental results are in good agreement with the predictions of the theoretical model.

Key words: quasi-continuous wave diode array side-pumped, Yb:YAG, laser delay time, pump pulse width, lensduct

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

  • 42.55.Rz
42.55.Xi (Diode-pumped lasers) 42.60.By (Design of specific laser systems) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.60.Rn (Relaxation oscillations and long pulse operation) 42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)