Vertical-cavity surface-emitting laser vapor sensor using swelling polymer reflection modulation

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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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.
Original languageEnglish
JournalApplied Physics Letters
Publication date2012
Volume101
Issue14
Pages143505
ISSN0003-6951
DOIs
StatePublished

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Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (citation of published article) and may be found at (URL/link for published article abstract).

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