Characterization of laser-induced damage by picosecond pulses on multi-layer dielectric coatings for petawatt-class lasers

R. Negres, C. Carr, I. Bass, D. Alessi, T. Laurence, K. Stanion, G. Guss, D. Cross, P. Wegner, C. Stolz
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引用次数: 5

Abstract

We investigate the optical damage performance of multi-layer dielectric (MLD) coatings suitable for use in high energy, large-aperture petawatt-class lasers. We employ small-area damage test methodologies to evaluate the damage resistance of various coatings as a function of deposition methods and coating materials under simulated use conditions. In addition, we demonstrate that damage initiation by raster scanning at lower fluences and growth threshold testing are required to estimate large-aperture optics’ performance.
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皮秒脉冲对多层介质涂层激光致损伤的表征
研究了适用于高能、大孔径千瓦级激光器的多层介质(MLD)涂层的光学损伤性能。在模拟使用条件下,我们采用小区域损伤测试方法来评估各种涂层的抗损伤性,作为沉积方法和涂层材料的函数。此外,我们还证明,在较低的影响下,需要光栅扫描和生长阈值测试来评估大孔径光学系统的性能。
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