Light intensification by ceria on the surface of fused silica

Kejun Chen; Baoxin Xiong; Xiao Yuan

doi:10.1117/12.2505815

15 November 2018 Light intensification by ceria on the surface of fused silica

Kejun Chen, Baoxin Xiong, Xiao Yuan

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109642J (2018) https://doi.org/10.1117/12.2505815
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

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.

Citation Download Citation

Kejun Chen, Baoxin Xiong, and Xiao Yuan "Light intensification by ceria on the surface of fused silica ", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109642J (15 November 2018); https://doi.org/10.1117/12.2505815

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