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Terahertz wave emission from plasmonic chiral metasurfaces

机译:等离子体激元手性表面的太赫兹波发射

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摘要

Plasmonic chiral metasurfaces with pinwheel-like structures are fabricated on silver films using a focused ion-beam milling technique. In time-domain spectroscopy, we observe terahertz (THz) wave emission from metasurfaces irradiated by a near-infrared Tirsapphire ultrashort pulsed laser. The origin of the THz wave generation is likely to be tunnelling ionization accompanied with photoelectron acceleration by ponderomotive force. Numerical simulation is carried out toward improvement of the chiral metasurfaces for better emission of circularly polarized THz waves.
机译:使用聚焦离子束铣削技术在银膜上制造具有风车状结构的等离子手性超表面。在时域光谱中,我们观察到由近红外Tirsapphire超短脉冲激光辐照的超颖表面发出的太赫兹(THz)波。太赫兹波产生的起源很可能是隧道电离,并伴随着由光动力引起的光电子加速。进行了数值模拟,以改善手性超颖表面,以更好地发射圆极化太赫兹波。

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  • 来源
    《Applied Physics》 |2016年第3期|157.1-157.5|共5页
  • 作者单位

    Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan;

    Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan;

    Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan;

    Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan;

    Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan;

    Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan;

    Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan;

    Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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