Method for simulating laser damage dynamic behavior induced by surface defect in KDP crystal processing

Method for simulating laser damage dynamic behavior induced by surface defect in KDP crystal processing

The invention provides a dynamic behavior simulation method for laser damage induced by KDP crystal processing surface defects, and belongs to the technical field of engineering optics. The problem that an existing KDP crystal damage model does not consider the effect of multiple physical fields gen...

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Hauptverfasser: CHEN GUANG, DING WENYU, LIU ZHICHAO, XU QIAO, LEI HONGQIN, WANG SHENGFEI, ZHAO LINJIE, HU JIANRUI, CHENG JIAN, CHEN MINGJUN
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS
PHYSICS
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creator CHEN GUANG
DING WENYU
LIU ZHICHAO
XU QIAO
LEI HONGQIN
WANG SHENGFEI
ZHAO LINJIE
HU JIANRUI
CHENG JIAN
CHEN MINGJUN
description The invention provides a dynamic behavior simulation method for laser damage induced by KDP crystal processing surface defects, and belongs to the technical field of engineering optics. The problem that an existing KDP crystal damage model does not consider the effect of multiple physical fields generated under laser irradiation on crystals, only a damage final-state morphology graph can be obtained, and the correlation between surface defects and damage cannot be revealed is solved. The method comprises the following steps: describing energy gathered in the KDP crystal by utilizing light intensity, introducing a light enhancement factor, establishing a finite element model and solving, establishing an energy deposition equation, describing damage fracture behaviors of the KDP crystal by adopting a JH model, selecting maximum tensile stress as a failure criterion of the KDP crystal, and further establishing a multi-physical field laser damage kinetic model. The effect of multiple physical fields on the crysta
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS
PHYSICS
title Method for simulating laser damage dynamic behavior induced by surface defect in KDP crystal processing
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