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Proceedings Paper

VCSEL-based flexible opto-fluidic fluorescence sensors
Author(s): Dongseok Kang; Boju Gai; Jongseung Yoon
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Paper Abstract

Flexible opto-fluidic fluorescence sensors based on microscale vertical cavity surface emitting lasers (micro-VCSELs) and silicon photodiodes (Si-PDs) are demonstrated, where arrays of 850 nm micro-VCSELs and thin film Si-PDs are heterogeneously integrated on a polyethylene terephthalate (PET) substrate by transfer printing, in conjunction with elastomeric fluidic channel. Enabled with optical isolation trenches together with wavelength- and angle-selective spectral filters implemented to suppress the absorption of excitation light, the integrated flexible fluorescence sensors exhibited significantly enhanced signal-to-background ratio, resulting in a maximum sensitivity of 5 × 10-5 wt% of infrared-absorbing organic dyes.

Paper Details

Date Published: 4 March 2016
PDF: 6 pages
Proc. SPIE 9766, Vertical-Cavity Surface-Emitting Lasers XX, 97660G (4 March 2016); doi: 10.1117/12.2213808
Show Author Affiliations
Dongseok Kang, The Univ. of Southern California (United States)
Boju Gai, The Univ. of Southern California (United States)
Jongseung Yoon, The Univ. of Southern California (United States)

Published in SPIE Proceedings Vol. 9766:
Vertical-Cavity Surface-Emitting Lasers XX
Kent D. Choquette; James K. Guenter, Editor(s)

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