A method to change the average mode area inside a semiconductor saturable absorber mirror

Rui Song; Jing Hou; Shengping Chen; Yanbin Wang; Weiqiang Yang; Qisheng Lu

doi:10.1117/12.901104

15 August 2011 A method to change the average mode area inside a semiconductor saturable absorber mirror

Rui Song, Jing Hou, Shengping Chen, Yanbin Wang, Weiqiang Yang, Qisheng Lu

Proceedings Volume 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications; 81961Y (2011) https://doi.org/10.1117/12.901104
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

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.

Citation Download Citation

Rui Song, Jing Hou, Shengping Chen, Yanbin Wang, Weiqiang Yang, and Qisheng Lu "A method to change the average mode area inside a semiconductor saturable absorber mirror", Proc. SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, 81961Y (15 August 2011); https://doi.org/10.1117/12.901104

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