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

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

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 - 2012 7月 16
對外發佈

ASJC Scopus subject areas

  • 原子與分子物理與光學

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