Journal article
Vertical-cavity surface-emitting laser vapor sensor using swelling polymer reflection modulation
Department of Photonics Engineering, Technical University of Denmark1
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark2
Department of Micro- and Nanotechnology, Technical University of Denmark3
Quantum and Laser Photonics, Department of Photonics Engineering, Technical University of Denmark4
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.
| Language: | English |
|---|---|
| Publisher: | American Institute of Physics |
| Year: | 2012 |
| ISSN: | 10773118 and 00036951 |
| Types: | Journal article |
| DOI: | 10.1063/1.4754291 |
| ORCIDs: | Ansbæk, Thor , Nielsen, Claus Højgård , Chung, Il-Sug and Yvind, Kresten |
