Share Email Print
cover

Proceedings Paper

Laser induced bulk damage of KDP crystals prepared by rapid growth
Author(s): Yuan'an Zhao; Yueliang Wang; Guohang Hu; Jianda Shao; Junxiu Chang; Xiaofeng Liu; Dawei Li; Yuangen Yao; Xiuqin Lin; Guozong Zheng
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Laser damage of TYPE-I KDP plate was investigated. High-purity large-aperture KDP crystals used for second harmonic frequency generation in high power laser systems were prepared by rapid growth. The different parts of the KDP boule, spanning the growth history including early, middle and late growth stages, were examined for their bulk defect properties and laser damage behaviors. Ultra-microscopy was employed to analyze the preexisting laser scattering defects, and the correlations between scattering and laser damage initiations/ growth were identified. The laser damage fluence was dominated by the defect scale or the scattering intensity. Simulation of thermal response of the defects under laser radiation indicated the micro-explosion occurrence. Thermal annealing and laser conditioning were applied to reduce defect density and improve laser damage resistance. Based on the above techniques, laser induced damage threshold (LIDT) of 400 mm aperture TYPE-I crystal plate exceeded 22J/cm2 (1064nm, 3ns), which met the requirements of the high power laser systems.

Paper Details

Date Published: 22 September 2014
PDF: 5 pages
Proc. SPIE 9238, Pacific Rim Laser Damage 2014: Optical Materials for High-Power Lasers, 923806 (22 September 2014); doi: 10.1117/12.2073342
Show Author Affiliations
Yuan'an Zhao, Shanghai Institute of Optics and Fine Mechanics (China)
Yueliang Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Guohang Hu, Shanghai Institute of Optics and Fine Mechanics (China)
Jianda Shao, Shanghai Institute of Optics and Fine Mechanics (China)
Junxiu Chang, Shanghai Institute of Optics and Fine Mechanics (China)
Xiaofeng Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Dawei Li, Shanghai Institute of Optics and Fine Mechanics (China)
Yuangen Yao, Fujian Institute of Research on the Structure of Matter (China)
Xiuqin Lin, Fujian Institute of Research on the Structure of Matter (China)
Guozong Zheng, Fujian Institute of Research on the Structure of Matter (China)


Published in SPIE Proceedings Vol. 9238:
Pacific Rim Laser Damage 2014: Optical Materials for High-Power Lasers
Takahisa Jitsuno; Jianda Shao; Wolfgang Rudolph, Editor(s)

© SPIE. Terms of Use
Back to Top