Analytical model for optimizing the parameters of an external passive Q-switch in a fiber laser
Applied Optics, Vol. 47, Issue 13, pp. 2297-2302 (2008)
http://dx.doi.org/10.1364/AO.47.002297
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Abstract
An analytical model is developed for optimizing two key parameters of an external passive Q-switch in a fiber laser from the criterion of the minimum average mode area inside the saturable absorber. One parameter is the optimum focal position that is analytically derived to be a function of the thickness and initial transmission of the saturable absorber. The other parameter is the optimum magnification of the reimaging optics that is analytically derived to be in terms of the numerical aperture and core radius of the laser fiber as well as the thickness and initial transmission of the saturable absorber. To demonstrate the utilization of the present model, an experiment on the subject of the passively Q-switched fiber laser is performed and optimized.
© 2008 Optical Society of America
OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3615) Lasers and laser optics : Lasers, ytterbium
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: October 26, 2007
Revised Manuscript: March 21, 2008
Manuscript Accepted: March 26, 2008
Published: April 28, 2008
Citation
J. Y. Huang, H. C. Liang, K. W. Su, and Y. F. Chen, "Analytical model for optimizing the parameters of an external passive Q-switch in a fiber laser," Appl. Opt. 47, 2297-2302 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-13-2297
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