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Intense terahertz radiation from relativistic laser–plasma interactions

G Q Liao, Y T Li, C Li, H Liu, Y H Zhang, W M Jiang, X H Yuan, J Nilsen, T Ozaki, W M Wang2017年Plasma Physics and Controlled FusionIF 2.2出版社

The development of tabletop intense terahertz (THz) radiation sources is extremely important for THz science and applications. This paper presents our measurements of intense THz radiation from relativistic laser–plasma interactions under different experimental conditions. Several THz generation mechanisms have been proposed and investigated, including coherent transition radiation (CTR) emitted by fast electrons from the target rear surface, transient current radiation at the front of the target, and mode conversion from electron plasma waves (EPWs) to THz waves. The results indicate that relativistic laser plasma is a promising driver of intense THz radiation sources.

日本語訳

テラヘルツ(THz)放射の卓上型強力源の開発は、THz科学とその応用にとって極めて重要です。本論文では、異なる実験条件下での相対論的レーザー・プラズマ相互作用からの強力THz放射の測定結果を報告します。これまでに、ターゲット背面からの高速電子によるコヒーレント遷移放射(CTR)、ターゲット前面での過渡電流放射、および電子プラズマ波(EPW)からTHz波へのモード変換など、いくつかのTHz生成メカニズムが提案され、研究されてきました。結果は、相対論的レーザープラズマが強力THz放射源の有望な駆動手段であることを示しています。

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Laser plasmaLaser-plasma interactionRelativistic laserTerahertz radiation
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