Near-field dynamic study of the nanoacoustic effect on the extraordinary transmission in gold nanogratings

Szu Chi Yang, Hung Pin Chen, Hui Hsin Hsiao, Pei Kuen Wei, Hung Chun Chang, Chi Kuang Sun

研究成果: 雜誌貢獻文章同行評審

6 引文 斯高帕斯(Scopus)

摘要

In this paper we report that nanoacoustic pulses can modulate the extraordinary optical transmission (EOT) in nanogratings with a high frequency bandwidth. This study was performed on gold nanogratings on top of a GaN crystal by combining a near-field scanning optical microscope with a femtosecond nanoultrasonic system. Experimental results indicate that the propagating longitudinal nanoacoustic pulses changed the refractive index of a GaN crystal and therefore modulated the near-field cavity mode behavior. Our finding suggests that the temporal modulation with a >11GHz bandwidth can be achieved, with a high potential for future temporal and high speed control on the EOT behavior in nanostructures.
原文英語
頁(從 - 到)16186-16194
頁數9
期刊Optics Express
20
發行號15
DOIs
出版狀態已發佈 - 七月 16 2012
對外發佈

ASJC Scopus subject areas

  • 原子與分子物理與光學

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