標題: Engineering surface lattice resonance of elliptical gold nanodisk array for enhanced strain sensing
作者: Chang, Kai-Hao
Cheng, Jiunn-Shouh
Lu, Tsan-Wen
Lee, Po-Tsung
光電工程學系
Department of Photonics
公開日期: 10-Dec-2018
摘要: We demonstrate an elliptical gold nanodisk array (GNA) for engineering the spectral profile of surface lattice resonance (SLR). The nanodisk's shape has a great impact on SLR. A small linewidth of 20 mn at an aspect ratio of 1.17 and a large wavelength tuning of 64 nm within 4% strain via different orientations and polarizations is achieved experimentally. The enhanced wavelength response of 6.93 mu per 1% strain variation for elliptical GNA is 2.4 times better than that for general circular GNA. Furthermore, figure of merit of strain sensing for elliptical GNA approaches 5.7 times greater than that for circular GNA. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
URI: http://dx.doi.org/10.1364/OE.26.033215
http://hdl.handle.net/11536/148581
ISSN: 1094-4087
DOI: 10.1364/OE.26.033215
期刊: OPTICS EXPRESS
Volume: 26
起始頁: 33215
結束頁: 33225
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