500fs脉冲下HfO2和Nb2O5单层能量沉积及损伤机理分析

Dam-be Douti, M. Chrayteh, S. Monneret, M. Commandré, L. Gallais
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引用次数: 0

摘要

在实验和数值研究的基础上,对亚ps脉冲辐照下薄膜样品的激光损伤阈值和损伤部位形貌进行了研究。实验采用500fs脉冲在1030nm和343nm处进行,用相位成像、原子力显微镜和扫描电镜对辐照部位进行了分析。将所得结果与考虑薄膜瞬态光学特性的基于单速率方程的薄膜能量沉积模拟结果进行了比较。结果表明,临界吸收能作为损伤判据,其结果与实测的LIDT和观察到的损伤形态相一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of energy deposition and damage mechanisms in single layers of HfO2 and Nb2O5 submitted to 500fs pulses
Laser Induced Damage Thresholds and morphologies of damage sites on thin films samples irradiated by sub-ps pulses are studied based on experimental and numerical studies. Experiments are conducted with 500fs pulses at 1030nm and 343nm and the irradiated sites are analyzed with phase imaging, AFM and SEM. The results are compared to simulations of energy deposition in the films based on the Single Rate Equation taking account transient optical properties of the films. Results suggest that a critical absorbed energy as a damage criterion give consistent results both with the measured LIDT and the observed damage morphologies.
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