Photonic crystal-enhanced fluorescence through the extraction of dually polarized modes

被引：2

作者：

Wu, Yu-An ^{[1
]}

Wu, Po-Tsung ^{[1
]}

Huang, Cheng-Sheng ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mech Engn, Hsinchu 30010, Taiwan

来源：

OPTICS LETTERS | 2015年 / 40卷 / 05期

关键词：

PROTEIN MICROARRAYS; AMPLIFICATION; SENSITIVITY; BIOSENSORS; EMISSION; FILTERS;

D O I：

10.1364/OL.40.000733

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this Letter, we demonstrate that fluorescence detection by using surface-bound fluorescent molecules can be enhanced by coupling the fluorescence emission with dually polarized resonant modes of a photonic crystal (PC) substrate. The PC was fabricated through nanoreplica molding by using a plastic substrate. It was designed such that the transverse magnetic (TM)- and transverse electric (TE)-polarized resonance coincided at a specific combination of the incident angle and the illumination wavelength. During excitation, the nonpolarized emission from cyanine-5 was simultaneously coupled with the TE and TM resonant modes and reradiated into the detection instrument, increasing the fluorescence collection efficiency and thus, enhancing the fluorescence detection. (C) 2015 Optical Society of America

引用

页码：733 / 735

页数：3

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