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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 21 — Oct. 10, 2011
  • pp: 21060–21073

Beam quality improvement by gain guiding effect in end-pumped Nd:YVO4 laser amplifiers

Zhen Xiang, Dan Wang, Sunqiang Pan, Yantao Dong, Zhigang Zhao, Tong Li, Jianhong Ge, Chong Liu, and Jun Chen  »View Author Affiliations


Optics Express, Vol. 19, Issue 21, pp. 21060-21073 (2011)
http://dx.doi.org/10.1364/OE.19.021060


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Abstract

In end-pumped Nd:YVO4 amplifiers, beam quality improvement is obtained both in theory and in experiments. A theoretical model of gain-guided laser amplifier is developed by comprehensively considering thermal effect, gain guiding and gain saturation effect. Several key parameters of the amplifier are discussed such as the input beam quality, the beam filling factor between input beam and pump beam, the ratio between input power and pump power, and the length of laser crystal. The theoretical results are confirmed by the experiments.

© 2011 OSA

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3430) Lasers and laser optics : Laser theory
(140.3480) Lasers and laser optics : Lasers, diode-pumped

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 29, 2011
Revised Manuscript: September 12, 2011
Manuscript Accepted: September 27, 2011
Published: October 7, 2011

Citation
Zhen Xiang, Dan Wang, Sunqiang Pan, Yantao Dong, Zhigang Zhao, Tong Li, Jianhong Ge, Chong Liu, and Jun Chen, "Beam quality improvement by gain guiding effect in end-pumped Nd:YVO4 laser amplifiers," Opt. Express 19, 21060-21073 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-21-21060


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