Dispersion effects in light pulses refracted from right- to left-handed media

机译：从右手到左手介质折射的光脉冲中的色散效应

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摘要

Wave fronts of a Gaussian light pulse and a CW Gaussian beam refracted at the boundary of right- and left-handed media are modified due to material dispersion. Group velocity of a negatively refracted pulse is parallel to the direction of energy transport and anti-parallel to phase velocity. Positively refracted group front moves sideways with respect to negatively refracted phase front. We analyze modifications of light pulses of different spectra in effective media with different frequency dispersion curves. Analysis of dispersion effects is important because of possible applications in band separation and pulse compression in metamaterial devices. In 2D FDTD simulations we analyze evolution of CW Gaussian beams and short Gaussian pulses in an effective double negative material with dependence of permittivity and permeability functions on frequency corresponding to Drude material-dispersion model.

机译：由于材料的分散，高斯光脉冲的波前和在右手和左手介质的边界处折射的CW高斯光束的波前会发生变化。负折射脉冲的群速度与能量传输方向平行，而与相速度反平行。正折射组前移相对于负折射相前移向侧面。我们分析了具有不同频率色散曲线的有效介质中不同光谱的光脉冲的修改。色散效应的分析很重要，因为它可能在超材料设备中的频带分离和脉冲压缩中应用。在2D FDTD仿真中，我们分析了有效双负材料中CW高斯光束和短高斯脉冲的演化，其介电常数和磁导率函数取决于与Drude材料色散模型相对应的频率。

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来源
《Metamaterials II; Proceedings of SPIE-The International Society for Optical Engineering; vol.6581》|2007年|65810W.1-65810W.8|共8页
会议地点 Prague(CZ)
作者
J. Pniewski; T. Szoplik; M. Scalora;
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作者单位

University of Warsaw, Faculty of Physics, Pasteura 7, 02-093 Warsaw, Poland;

Charles M. Bowden Research Center, Bldg.7804, Redstone Arsenal, AL 35898-5000, USA;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;半导体技术;
关键词
metamaterials; double negative materials; dispersion; negative refraction;

机译：超材料双负材料；分散;负折射;

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Dispersion effects in light pulses refracted from right- to left-handed media

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