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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. S1 — May. 31, 2007
  • pp: S44–S45

Analysing the pulse formation of Q-switched Nd:YAG laser with super-Gaussian mirror resonator

Dingxiang Cao, Xiaofeng Wang, Shaobo He, Haiwu Yu, and Wangguo Zheng  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue S1, pp. S44-S45 (2007)


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Abstract

A numerical model is presented to predict the time-resolved evolution of the spatial intensity distribution of the laser pulses in the super-Gaussian mirror resonator, taking into account diffraction and stored energy depletion. The beam-quality factor M2 is calculated during the pulse evolution. Simulation results show that gain saturation affects the beam quality of the Q-switched solid-state lasers, the corresponding values of the M2 parameter increase during the pulse evolution. The spatial distribution of laser pulse first starts on the resonator axis with a Gaussian-shaped spot, then expands very quickly and forms a donut-shaped profile towards the end of the pulse.

© 2007 Chinese Optics Letters

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4480) Lasers and laser optics : Optical amplifiers
(140.4780) Lasers and laser optics : Optical resonators

Citation
Dingxiang Cao, Xiaofeng Wang, Shaobo He, Haiwu Yu, and Wangguo Zheng, "Analysing the pulse formation of Q-switched Nd:YAG laser with super-Gaussian mirror resonator," Chin. Opt. Lett. 5, S44-S45 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-S1-S44

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