基于瞬态受激布里渊散射脉冲压缩的115 ps、100 Hz高光束质量激光器

IF 5.2 1区 物理与天体物理 Q1 OPTICS High Power Laser Science and Engineering Pub Date : 2023-08-29 DOI:10.1017/hpl.2023.61
J. Yue, Yulei Wang, Mengyuan Jia, Kai Li, Chen Cao, Yu-De Yu, Yunfei Li, Zhiwei Lü
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摘要

摘要:本文研究了利用高重复率瞬态受激布里渊散射产生短脉冲持续时间和高光束质量的激光脉冲。在高重复率和瞬态情况下,热效应和光击穿是制约能量反射率和光束质量的主要因素。通过实验分析,确定了相互作用长度和焦点尺寸是通过减少介质对激光脉冲的吸收来减小热效应的关键参数。结果表明,在相互作用长度为50 mm的条件下,脉冲持续时间为175 ps,光束质量M2约为1.2,最大反射率超过40%。此外,在相互作用长度为90 mm时,脉冲输出的最小持续时间为115 ps (0.5τQ)。
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A 115 ps, 100 Hz high-beam-quality laser based on transient stimulated Brillouin scattering pulse compression
Abstract This work demonstrates the generation of short pulse duration and high-beam-quality laser pulses using transient stimulated Brillouin scattering at a high repetition rate. Thermal effects and optical breakdown are identified as the main factors that restrict energy reflectivity and beam quality under high repetition rates and transient situations. Through experimental analysis, the interaction length and focal point size are determined to be the key parameters in reducing the thermal effect by reducing the absorption of the laser pulse by the medium. The obtained results show that pulses with a duration of 175 ps and beam quality M2 of around 1.2 can be achieved with a maximum energy reflectivity of over 40% under an interaction length of 50 mm. Furthermore, at an interaction length of 90 mm, a pulse output with a minimum duration of 115 ps (0.5τQ) is achieved.
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来源期刊
High Power Laser Science and Engineering
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.
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