不同大气压下群速度色散对高阶克尔效应飞秒激光成丝的影响

IF 0.3 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Lithuanian Journal of Physics Pub Date : 2023-05-31 DOI:10.3952/physics.2023.63.2.1

Y. Qian, L. Wang, G. Shi, Y. Zhang, Z. Sun, Y. Lin

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引用次数: 0

摘要

研究了不同气压下群速度色散对高阶Kerreffect飞秒激光成丝的影响。结果表明，GVD使坍塌距离不满足Dawes和Marburger提出的半经验公式，抑制了传播过程中的多次聚焦和分裂，缩短了细丝的长度。此外，我们还将结果与仅考虑三阶克尔效应的结果进行了比较。这为研究飞秒激光成丝过程中的散焦效应是高阶克尔效应还是等离子体效应提供了一些信息。

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The impact of groupvelocity dispersion on femtosecond laser filamentation with higher-order Kerr effect at different atmospheric pressures

The impact of group velocity dispersion (GVD) on femtosecond laser filamentation with the higher-order Kerreffect is studied at different atmospheric pressures. The results show that GVD makes the collapse distance to not meet the semi-empirical formula proposed by Dawes and Marburger, suppresses multiple focusing and splitting in time during the propagation process, and reduces the length of filament. In addition, we also compared the results with those considering only the third-order Kerr effect. This provides some information for the study of whether the defocus effect in the femtosecond laser filamentation is the higher-order Kerr effect or the plasma effect.

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来源期刊

Lithuanian Journal of Physics 物理-物理：综合

CiteScore

0.90

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： The main aim of the Lithuanian Journal of Physics is to reflect the most recent advances in various fields of theoretical, experimental, and applied physics, including: mathematical and computational physics; subatomic physics; atoms and molecules; chemical physics; electrodynamics and wave processes; nonlinear and coherent optics; spectroscopy.