Impact of temporal modulations on laser-induced damage of fused silica at 351 nm

IF 5.2 1区物理与天体物理 Q1 OPTICS

High Power Laser Science and Engineering Pub Date : 2022-12-27 DOI:10.1017/hpl.2022.41

C. Bouyer, R. Parreault, N. Roquin, J. Natoli, L. Lamaignère

引用次数: 2

Abstract

Abstract Laser-induced damage (LID) on high-power laser facilities is one of the limiting factors for the increase in power and energy. Inertial confinement fusion (ICF) facilities such as Laser Mégajoule or the National Ignition Facility use spectral broadening of the laser pulse that may induce power modulations because of frequency modulation to amplitude modulation conversion. In this paper, we study the impact of low and fast power modulations of laser pulses both experimentally and numerically. The MELBA experimental testbed was used to shape a wide variety of laser pulses and to study their impact on LID. A 1D Lagrangian hydrodynamic code was used to understand the impact of different power profiles on LID.

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时间调制对351nm熔融二氧化硅激光损伤的影响

大功率激光设备的激光诱发损伤是制约大功率激光设备功率和能量提高的因素之一。惯性约束聚变(ICF)设施，如Laser m焦耳装置或国家点火装置，利用激光脉冲的频谱展宽，由于频率调制到幅度调制的转换，可能会引起功率调制。本文从实验和数值两方面研究了激光脉冲低功率和快功率调制的影响。利用MELBA实验试验台对多种激光脉冲进行了成形，并研究了其对LID的影响。采用一维拉格朗日流体力学程序分析了不同功率分布对LID的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Power Laser Science and Engineering Physics and Astronomy-Nuclear and High Energy Physics

CiteScore

7.10

自引率

4.20%

发文量

401

审稿时长

21 weeks

期刊介绍： High Power Laser Science and Engineering (HPLaser) is an international, peer-reviewed open access journal which focuses on all aspects of high power laser science and engineering. HPLaser publishes research that seeks to uncover the underlying science and engineering in the fields of high energy density physics, high power lasers, advanced laser technology and applications and laser components. Topics covered include laser-plasma interaction, ultra-intense ultra-short pulse laser interaction with matter, attosecond physics, laser design, modelling and optimization, laser amplifiers, nonlinear optics, laser engineering, optical materials, optical devices, fiber lasers, diode-pumped solid state lasers and excimer lasers.