Share Email Print

Proceedings Paper

Transient dynamic behavior during nanosecond laser-induced damage initiated by surface defects on KDP crystals with simulation and experimental method
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The issues of laser-induced damage of transparent dielectric optics severely limit the development of large laser systems. In order to explore the mechanism of nanosecond laser damage on KDP surface, a multi-physics coupling dynamics model and a time resolved detection system were developed to obtain the transient dynamic behaviors of laser damage. The behaviors of laser energy transmission, thermal field distribution and damage morphology during nanosecond laser irradiation on KDP surface were simulated. It is found that the enhancement of light intensity caused by surface defect plays an important role in the initial energy deposition and damage initiation of the laser irradiation area. The evolution of the temperature field and fluid flow during subsequent laser irradiation contributes to the laser damage process. The simulated evolution of heat absorption source is verified by the transient images of local defect-induced laser damage captured by the ultra-fast experimental detection system. This work provides further insights in explaining the laserinduced damage by surface defects on KDP crystals.

Paper Details

Date Published: 8 July 2019
PDF: 6 pages
Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 110630K (8 July 2019); doi: 10.1117/12.2540166
Show Author Affiliations
Hao Yang, Harbin Institute of Technology (China)
China Academy of Engineering Physics (China)
Jian Cheng, Harbin Institute of Technology (China)
Zhichao Liu, China Academy of Engineering Physics (China)
Qi Liu, Harbin Institute of Technology (China)
Linjie Zhao, Harbin Institute of Technology (China)
Jian Wang, China Academy of Engineering Physics (China)
Mingjun Chen, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 11063:
Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?