LED pumped polymer laser sensor for explosives

Wang, Y., Morawska, P. O., Kanibolotsky, A. L., Skabara, P. J. , Turnbull, G. A. and Samuel, I. D.W. (2013) LED pumped polymer laser sensor for explosives. Laser and Photonics Reviews, 7(6), L71-L76. (doi: 10.1002/lpor.201300072) (PMID:25821526) (PMCID:PMC4374702)

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A very compact explosive vapor sensor is demonstrated based on a distributed feedback polymer laser pumped by a commercial InGaN light‐emitting diode. The laser shows a two‐stage turn on of the laser emission, for pulsed drive currents above 15.7 A. The ‘double‐threshold’ phenomenon is attributed to the slow rise of the ∼30 ns duration LED pump pulses. The laser emits a 533 nm pulsed output beam of ∼10 ns duration perpendicular to the polymer film. When exposed to nitroaromatic model explosive vapors at ∼8 ppb concentration, the laser shows a 46% change in the surface‐emitted output under optimized LED excitation.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter
Authors: Wang, Y., Morawska, P. O., Kanibolotsky, A. L., Skabara, P. J., Turnbull, G. A., and Samuel, I. D.W.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Laser and Photonics Reviews
ISSN (Online):1863-8899
Published Online:08 October 2013
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Laser and Photonics Reviews 7(6):L71-L76
Publisher Policy:Reproduced under a Creative Commons License

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