激光固体等离子体相互作用产生的强太赫兹相干跃迁辐射

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) Pub Date : 2017-08-01 DOI:10.23919/URSIGASS.2017.8105132

W. Ding, Z. Sheng, S. Mondal, Q. Wei, H. Hafez, M. A. Fareed, A. Laramée, X. Ropagnol, G. Zhang, S. Sun, J. Zhang, T. Ozaki, S. Gao

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引用次数: 0

摘要

研究了基于高强度超短激光与固体等离子体相互作用的强宽带太赫兹辐射的产生。利用功率约为1018w /cm2的激光产生电场为数百MV/cm的太赫兹脉冲。理论模型、模拟结果与实验结果吻合较好，表明太赫兹辐射是激光等离子体相互作用产生的热电子相干跃迁辐射。我们研究了平面目标和纳米棒阵列目标，后者有效地增强了太赫兹源的强度和方向性。

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Intense THz-coherent transition radiation from laser solid plasma interaction

We investigate intense broadband terahertz radiation generation based the interaction of high intensity ultrashort laser with solid plasma. THz pulse with electric field of hundreds of MV/cm are generated using laser with intensity of about 1018 W/cm2. Theoretical model, simulations agree well with experiments, and reveal that the THz radiation is coherent transition radiation by hot electrons produced in laser-plasma interaction. We have studied both planar and nanorod array targets, latter of which efficiently enhance the intensity and directionality of the THz source.

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2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)

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