Analytical model for the design of external-cavity passively Q-switched fiber lasers

研究成果: Conference article

摘要

An analytical model has been developed to minimize the effective mode area in a saturable absorber for an external-cavity passively Q-switched fiber laser. Under the condition of minimum effective mode size inside the saturable absorber, the analytical expressions for two key parameters of an optimum system have been derived. 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 re-imaging 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. The present model provides a straightforward procedure to adopt a focusing system for the output performance. A diode-pumped ytterbium-doped fiber lasers with a Cr:YAG crystal as a saturable absorber is considered to illustrate the utility of the present model.

原文English
文章編號68731X
期刊Proceedings of SPIE - The International Society for Optical Engineering
6873
DOIs
出版狀態Published - 17 六月 2008
事件Fiber Lasers V: Technology, Systems, and Applications - San Jose, CA, United States
持續時間: 21 一月 200824 一月 2008

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