Abstract

We present a simulation method to reproduce the damage crater formation and particle ejection phenomena observed in the laser-induced surface damage process of potassium dihydrogen phosphate (KDP) crystals. Based on the smoothed particle hydrodynamics method, which is commonly used for solving shock and blast problems, equivalent explosion simulation models of the laser-induced damage process have been established. Moreover, laser damage experiments combined with time-resolved techniques are performed on KDP surfaces to investigate the impact of laser fluences on the shockwave propagation and the particle ejection speed. We find that the simulation models can predict the laser-induced damage behaviors of the KDP crystal, which verifies the validity of the proposed method.

© 2019 Optical Society of America

Investigation of the laser-induced surface damage of KDP crystal by explosion simulation

Shengfei Wang, Jian Wang, Xiangyang Lei, Zhichao Liu, Jianfeng Zhang, and Qiao Xu
Opt. Express 27(11) 15142-15158 (2019)

Interaction of short laser pulses with model contamination microparticles on a high reflector

K. R. P. Kafka and S. G. Demos
Opt. Lett. 44(7) 1844-1847 (2019)

Laser damage dependence on the size and concentration of precursor defects in KDP crystals: view through differently sized filter pores

Yueliang Wang, Yuanan Zhao, Xiaoyi Xie, Guohang Hu, Liujiang Yang, Ziyuan Xu, and Jianda Shao
Opt. Lett. 41(7) 1534-1537 (2016)

Study of morphological feature and mechanism of potassium dihydrogen phosphate surface damage under a 351  nm nanosecond laser

Zhichao Liu, Feng Geng, Yaguo Li, Jian Cheng, Hao Yang, Yi Zheng, Jian Wang, and Qiao Xu
Appl. Opt. 57(35) 10334-10341 (2018)

Determination of stress waves and their effect on the damage extension induced by surface defects of KDP crystals under intense laser irradiation

Wenyu Ding, Linjie Zhao, Mingjun Chen, Jian Cheng, Guang Chen, Hongqin Lei, Zhichao Liu, Feng Geng, Shengfei Wang, and Qiao Xu
Optica 10(6) 671-681 (2023)