纳米线
表面等离子体激元
手性(物理)
表面等离子体子
材料科学
圆极化
等离子体子
凝聚态物理
纳米光子学
极化(电化学)
极化子
叠加原理
光学
光电子学
分子物理学
物理
量子力学
手征异常
微带线
费米子
物理化学
化学
Nambu–Jona Lasinio模型
作者
Shunping Zhang,Hong Wei,Kui Bao,Ulf Håkanson,Naomi J. Halas,Peter Nordlander,Hongxing Xu
标识
DOI:10.1103/physrevlett.107.096801
摘要
Chiral surface plasmon polaritons (SPPs) can be generated by linearly polarized light incident at the end of a nanowire, exciting a coherent superposition of three specific nanowire waveguide modes. Images of chiral SPPs on individual nanowires obtained from quantum dot fluorescence excited by the SPP evanescent field reveal the chirality predicted in our theoretical model. The handedness and spatial extent of the helical periods of the chiral SPPs depend on the input polarization angle and nanowire diameter as well as the dielectric environment. Chirality is preserved in the free-space output wave, making a metallic nanowire a broad bandwidth subwavelength source of circular polarized photons.
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