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Chung, Il-Sug
Nano-Optoelectronics Lab.
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Vertical-cavity surface-emitting laser vapor sensor using swelling polymer reflection modulation

Author(s)
Ansbaek, ThorNielsen, Claus H.Dohn, SorenLarsson, DavidChung, Il-SugYvind, Kresten
Issued Date
2012-10
DOI
10.1063/1.4754291
URI
https://scholarworks.unist.ac.kr/handle/201301/23722
Fulltext
http://aip.scitation.org/doi/10.1063/1.4754291
Citation
APPLIED PHYSICS LETTERS, v.101, no.14, pp.143505
Abstract
Vapor detection using a low-refractive index polymer for reflection modulation of the top mirror in a vertical-cavity surface-emitting laser (VCSEL) is demonstrated. The VCSEL sensor concept presents a simple method to detect the response of a sensor polymer in the presence of volatile organic compounds. We model the physics as a change in the top mirror loss caused by swelling of the polymer upon absorbing the target volatile organic compound. Further we show how acetone vapors at 82 000 ppm concentration can change the polymer coated VCSEL output power by 20 mu W.
Publisher
AMER INST PHYSICS
ISSN
0003-6951

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