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Proceedings Paper

A method to change the average mode area inside a semiconductor saturable absorber mirror
Author(s): Rui Song; Jing Hou; Shengping Chen; Yanbin Wang; Weiqiang Yang; Qisheng Lu
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Paper Abstract

Semiconductor saturable absorber mirror (SESAM) is widely used in both fiber and solid state lasers for passively mode-locking in which two lenses are usually used to realize the coupling system between an SESAM and a fiber or solid material. The method of optical propagation matrix is used to calculate the changes of the diameter of a Gaussian beam in such a coupling system, the results show that the beam diameter could increase or decrease several times by properly choose the focal lengths of the two lenses and the space between them. As a result, the change of the average mode area inside the SESAM is fulfilled. This method has a great significance in reality and greatly increased the flexibility of a given SESAM with fixed saturation fluence in different type of lasers and laser configurations.

Paper Details

Date Published: 16 August 2011
PDF: 5 pages
Proc. SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, 81961Y (16 August 2011); doi: 10.1117/12.901104
Show Author Affiliations
Rui Song, National Univ. of Defense Technology (China)
Jing Hou, National Univ. of Defense Technology (China)
Shengping Chen, National Univ. of Defense Technology (China)
Yanbin Wang, National Univ. of Defense Technology (China)
Weiqiang Yang, National Univ. of Defense Technology (China)
Qisheng Lu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 8196:
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications
John C. Zarnecki; Carl A. Nardell; Rong Shu; Jianfeng Yang; Yunhua Zhang, Editor(s)

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