Transient transmittance and scattering changes during nanosecond laser-induced damage in fused silica

Zhen Cao; Guohang Hu; Hongbo He; Yuanan Zhao; Liujiang Yang; Yang Luo; Xiaocong Peng; Yao Shan

doi:10.1117/12.2269692

1 August 2017 Transient transmittance and scattering changes during nanosecond laser-induced damage in fused silica

Zhen Cao, Guohang Hu, Hongbo He, Yuanan Zhao, Liujiang Yang, Yang Luo, Xiaocong Peng, Yao Shan

Proceedings Volume 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers; 103390Y (2017) https://doi.org/10.1117/12.2269692
Event: Pacific Rim Laser Damage 2017: Optical Materials for High Power Lasers, 2017, Shanghai, China

Abstract

Transient transmission and scattering changes was observed to study the dynamics during the laser-induced bulk damage in fused silica at the wavelength of 532 and 355 nm. Within the nanosecond high power laser irradiation, the transmittance decreased dramatically, indicating an intense absorption. With fluence increasing, the time required to form the intense absorption was shortened, and at similar fluence, this time interval at the wavelength of 355 nm is shorter than that at 532 nm. At times, the intense absorption did not cause the macroscopic damage because no variation in scattering was observed. While the macroscopic damage occurred, the scattering kept on increasing until the end of pulse.

Citation Download Citation

Zhen Cao, Guohang Hu, Hongbo He, Yuanan Zhao, Liujiang Yang, Yang Luo, Xiaocong Peng, and Yao Shan "Transient transmittance and scattering changes during nanosecond laser-induced damage in fused silica", Proc. SPIE 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers, 103390Y (1 August 2017); https://doi.org/10.1117/12.2269692

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