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Proceedings Paper

Ultra-sensitive label-free biosensing by using single-mode coupled microcavity laser
Author(s): Lei Xu; Hao Li; Xiang Wu; Lei Shang; Liying Liu
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Paper Abstract

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.

Paper Details

Date Published: 28 April 2010
PDF: 7 pages
Proc. SPIE 7682, Photonic Microdevices/Microstructures for Sensing II, 76820C (28 April 2010); doi: 10.1117/12.853331
Show Author Affiliations
Lei Xu, Fudan Univ. (China)
Hao Li, Fudan Univ. (China)
Xiang Wu, Fudan Univ. (China)
Lei Shang, Fudan Univ. (China)
Liying Liu, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 7682:
Photonic Microdevices/Microstructures for Sensing II
Xudong Fan; Hai Xiao; Anbo Wang, Editor(s)

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