LED pumped polymer laser sensor for explosives
Wang, Yue and Morawska, Paulina O. and Kanibolotsky, Alexander L. and Skabara, Peter J. and Turnbull, Graham A. and Samuel, Ifor D W (2013) LED pumped polymer laser sensor for explosives. Laser and Photonics Reviews, 7 (6). L71-L76. ISSN 1863-8880 (https://doi.org/10.1002/lpor.201300072)
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Abstract
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. 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.
ORCID iDs
Wang, Yue ORCID: https://orcid.org/0000-0002-9891-8738, Morawska, Paulina O., Kanibolotsky, Alexander L. ORCID: https://orcid.org/0000-0003-3991-6297, Skabara, Peter J., Turnbull, Graham A. and Samuel, Ifor D W;-
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Item type: Article ID code: 47301 Dates: DateEvent1 November 2013PublishedSubjects: Technology > Electrical engineering. Electronics Nuclear engineering
Science > Physics
Science > ChemistryDepartment: Faculty of Engineering > Electronic and Electrical Engineering
Faculty of Science > Pure and Applied Chemistry
Technology and Innovation Centre > PhotonicsDepositing user: Pure Administrator Date deposited: 02 Apr 2014 12:29 Last modified: 23 Oct 2024 00:20 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/47301