Share Email Print
cover

Proceedings Paper

Laser-induced damage of coatings on Yb:YAG crystals at cryogenic condition
Author(s): He Wang; Weili Zhang; Shunli Chen; Meiping Zhu; Hongbo He; Zhengxiu Fan
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

As large amounts of heat need to be dissipated during laser operation, some diode pumped solid state lasers (DPSSL), especially Yb:YAG laser, operate at cryogenic condition. This work investigated the laser induced damage of coatings (high-reflective and anti-reflective coatings) on Yb:YAG crystals at cryogenic temperature and room temperature. The results show that the damage threshold of coatings at cryogenic temperature is lower than the one at room temperature. Field-emission scanning electron microscopy (FESEM), optical profiler, step profiler and Atomic force microscope (AFM) were used to obtain the damage morphology, size and depth. Taking alteration of physical parameters, microstructure of coatings and the environmental pollution into consideration, we analyzed the key factor of lowering the coating damage threshold at cryogenic conditions. The results are important to understand the mechanisms leading to damage at cryogenic condition.

Paper Details

Date Published: 22 November 2011
PDF: 9 pages
Proc. SPIE 8190, Laser-Induced Damage in Optical Materials: 2011, 819008 (22 November 2011); doi: 10.1117/12.899105
Show Author Affiliations
He Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Weili Zhang, Shanghai Institute of Optics and Fine Mechanics (China)
Shunli Chen, Shanghai Institute of Optics and Fine Mechanics (China)
Meiping Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Hongbo He, Shanghai Institute of Optics and Fine Mechanics (China)
Zhengxiu Fan, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 8190:
Laser-Induced Damage in Optical Materials: 2011
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; M. J. Soileau, Editor(s)

© SPIE. Terms of Use
Back to Top