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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 19 — Sep. 19, 2005
  • pp: 7708–7719

Passive Q-switching characteristics of Yb3+:Gd3Ga5O12 crystal

Xingyu Zhang, Alain Brenier, Qingpu Wang, Zhengping Wang, Jun Chang, Ping Li, Shaojun Zhang, Shuanghong Ding, and Shutao Li  »View Author Affiliations


Optics Express, Vol. 13, Issue 19, pp. 7708-7719 (2005)
http://dx.doi.org/10.1364/OPEX.13.007708


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Abstract

The passively Q-switched laser characteristics of a quasi-three-level Yb3+:Gd3Ga5O12 (Yb3+:GGG) crystal with Cr4+:YAG saturable absorbers are studied experimentally and theoretically. The pulse parameters under different experimental conditions are measured. Some characteristics different from those of a four-level system are found. In the theoretical aspect, taking into account the spatial distributions of the pump light and intracavity laser mode, the rate equations describing the single Q-switched pulse characteristics of a quasi-three-level system are obtained. The obtained theoretical results are in fair agreement with the experimental results. Some topics such as the influence of the pumping power, the selection of the pump beam size, the optimal combination of output coupler reflectivity and saturable absorber initial transmission, the influence of the excited absorption of the saturable absorber, are discussed.

© 2005 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3460) Lasers and laser optics : Lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Research Papers

History
Original Manuscript: June 24, 2005
Revised Manuscript: September 5, 2005
Published: September 19, 2005

Citation
Xingyu Zhang, Alain Brenier, Qingpu Wang, Zhengping Wang, Jun Chang, Ping Li, Shaojun Zhang, Shuanghong Ding, and Shutao Li, "Passive Q-switching characteristics of Yb3+:Gd3Ga5O12 crystal," Opt. Express 13, 7708-7719 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-19-7708


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