https://scholars.lib.ntu.edu.tw/handle/123456789/621136
標題: | Near-field dynamic study of the nanoacoustic effect on the extraordinary transmission in gold nanogratings | 作者: | Yang S.-C. Chen H.-P. Hsiao H.-H. Wei P.-K. Chang H.-C. HUNG-CHUN CHANG CHI-KUANG SUN HUI-HSIN HSIAO |
公開日期: | 2012 | 卷: | 20 | 期: | 15 | 起(迄)頁: | 16186-16194 | 來源出版物: | Optics Express | 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. ©2012 Optical Society of America. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864131006&doi=10.1364%2fOE.20.016186&partnerID=40&md5=e2f1907d469744bd32f3fea91d625204 https://scholars.lib.ntu.edu.tw/handle/123456789/621136 |
DOI: | 10.1364/OE.20.016186 | SDG/關鍵字: | Bandwidth; Gallium nitride; Refractive index; Cavity mode; Dynamic studies; Extraordinary optical transmission; Extraordinary transmission; Femtoseconds; GaN crystals; High potential; High speed control; High-frequency bandwidth; Nano-gratings; Near-field; Near-field scanning optical microscope; Temporal modulations; Gold |
顯示於: | 工程科學及海洋工程學系 |
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