Intense Mid-Infrared Laser Pulse Generated via Flying-Mirror Red-Shifting in Near-Critical-Density Plasmas

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外文摘要：Relativistic femtosecond mid-infrared pulses can be generated efficiently by laser interaction with near-critical-density plasmas.It is found theoretically and numerically that the radiation pressure of a circularly polarized laser pulse first compresses the plasma electrons to form a dense flying mirror with a relativistic high speed.The pulse reflected by the mirror is red-shifted to the mid-infrared range.Full three-dimensional simulations demonstrate that the central wavelength of the mid-infrared pulse is tunable from 3 μm to 14 μm,and the laser energy conversion efficiency can reach as high as 13％.With a 0.5-10 PW incident laser pulse,the generated mid-infrared pulse reaches a peak power of 10-180 TW,which is interesting for various applications in ultrafast and high-field sciences.

作者：

鲁瑜、李东澳、李倩妮、邵福球、余同普

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作者单位：

Department of Physics,National University of Defense Technology,Changsha 410073,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHunan Provincial Innovation Foundation for PostgraduateHunan Provincial Innovation Foundation for Postgraduate

项目编号：

123752441213500912275356CX20210062CX20230006

出版年：

2024

DOI：

10.1088/0256-307X/41/2/024101

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI

影响因子：0.515

ISSN：0256-307X

年,卷(期)：2024.41(2)

参考文献量31