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Proceedings Paper

Light intensification by ceria on the surface of fused silica
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Paper Abstract

The intensity distribution of an initially plane wave incident on ceria in subsurface layer is calculated numerically with Finite-different time-domain (FDTD) solutions.The results show that the light intensity enhancement is caused by lens effect due to the high refractive index of ceria, and the surface damage characteristics of fused silica is very sensitive to location of ceria, ceria size and incident wavelength. The ceria located on the exit surface of fused silica generates electric field enhancements that are stronger than those on the entrance surface. The increasing of ceria size can lead to higher light intensity enhancement factor (LIEF) and the LIEFs can reach two orders of magnitude when the diameter of ceria is three times that of the incident wavelength. The light intensity enhancement caused by ceria with the same location and diameter decreases with the increasing of wavelength. As ceria on polished surfaces is randomly oriented, the probaility for large intensity enhancements to occur is high. The model may provide effective support for research on laser-induced damage and improvement of processing technology for fused silica.

Paper Details

Date Published: 15 November 2018
PDF: 5 pages
Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109642J (15 November 2018); doi: 10.1117/12.2505815
Show Author Affiliations
Kejun Chen, Soochow Univ. (China)
Baoxin Xiong, Soochow Univ. (China)
Xiao Yuan, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 10964:
Tenth International Conference on Information Optics and Photonics
Yidong Huang, Editor(s)

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