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Conference paper

Polymer-coated vertical-cavity surface-emitting laser diode vapor sensor

By Ansbæk, Thor1,2; Nielsen, Claus Højgaard3; Larsen, Niels Bent3,4,5; Dohn, Søren3,6,7; Boisen, Anja3,6,7; Chung, Il-Sug2,8; Larsson, David1,2; Yvind, Kresten1,2

Edited by Guenter, James K.; Choquette, Kent D.

From

Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark1

Department of Photonics Engineering, Technical University of Denmark2

Department of Micro- and Nanotechnology, Technical University of Denmark3

Polymer Microsystems for Cell Processing Group, Polymer Micro and Nano Engineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark4

Polymer Micro and Nano Engineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark5

Nanoprobes Group, NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark6

NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark7

Quantum and Laser Photonics, Department of Photonics Engineering, Technical University of Denmark8

We report a new method for monitoring vapor concentration of volatile organic compounds using a vertical-cavity surface-emitting laser (VCSEL). The VCSEL is coated with a polymer thin film on the top distributed Bragg reflector (DBR). The analyte absorption is transduced to the electrical domain through modulation of the VCSEL output power as the polymer swell.

We have investigated the responsivity of this technique experimentally using a plasma polymerized polystyrene coating and explain the results theoretically as a reflectance modulation of the top DBR.

Language: English
Publisher: SPIE
Year: 2010
Pages: 76150A-10
Proceedings: Vertical-Cavity Surface-Emitting Lasers XIV SPIE Conference
ISSN: 1996756x and 0277786x
Types: Conference paper
DOI: 10.1117/12.841935
ORCIDs: Ansbæk, Thor , Nielsen, Claus Højgaard , Larsen, Niels Bent , Boisen, Anja , Chung, Il-Sug and Yvind, Kresten
Keywords

Functionalization, Gas sensing Sensor polymer Vapor sensor Vertical-cavity surface-emitting laser Volatile organic compound

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