Toroidal lasing spaser

Yao Wei Huang, Wei Ting Chen, Pin Chieh Wu, Vassili A. Fedotov, Nikolay I. Zheludev, Din Ping Tsai

研究成果: Article同行評審

95 引文 斯高帕斯(Scopus)

摘要

Toroidal shapes are often found in bio-molecules, viruses, proteins and fats, but only recently it was proved experimentally that toroidal structures can support exotic high-frequency electromagnetic excitations that are neither electric or magnetic multipoles. Such excitations, known as toroidal moments, could be playing an important role in enhancing inter-molecular interaction and energy transfer due to its higher electromagnetic energy confinement and weaker coupling to free space. Using a model toroidal metamaterial system, we show that coupling optical gain medium with high Q-factor toroidal resonance mode can enhance the single pass amplification to up to 65 dB. This offers an opportunity of creating the "toroidal" lasing spaser, a source of coherent optical radiation that is fueled by toroidal plasmonic oscillations in the nanostructure.

原文English
文章編號1237
期刊Scientific reports
3
DOIs
出版狀態Published - 2013

All Science Journal Classification (ASJC) codes

  • 多學科

指紋

深入研究「Toroidal lasing spaser」主題。共同形成了獨特的指紋。

引用此