Ultra-sensitive label-free biosensing by using single-mode coupled microcavity laser

被引：0

作者：

Xu, Lei ^{[1
]}

Li, Hao ^{[1
]}

Wu, Xiang ^{[1
]}

Shang, Lei ^{[1
]}

Liu, Liying ^{[1
]}

机构：

[1] Fudan Univ, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China

来源：

PHOTONIC MICRODEVICES/MICROSTRUCTURES FOR SENSING II | 2010年 / 7682卷

关键词：

bio-sensor; microcavity laser; single mode; SPIRAL-SHAPED MICRODISK; OPTICAL MICROCAVITIES; WAVE-GUIDE; RESONATORS; EMISSION; CAVITY;

D O I：

10.1117/12.853331

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report that by using a single mode coupled microcavity laser, we successfully realized a sensitivity of 80 pg/ml for detecting BSA. The detecting scheme also works for other bio samples. The result proves that active sensing with microcavity laser can achieve ultrahigh sensitivity. Further analysis shows that the ultra-sensitivity comes from the slight change of coupling coefficient between the two coupled microcavities.

引用

页数：7

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