LED pumped polymer laser sensor for explosives

被引：63

作者：

Wang, Yue ^{[1
]}

Morawska, Paulina O. ^{[1
]}

Kanibolotsky, Alexander L. ^{[2
]}

Skabara, Peter J. ^{[2
]}

Turnbull, Graham A. ^{[1
]}

Samuel, Ifor D. W. ^{[1
]}

机构：

[1] Univ St Andrews, Sch Phys & Astron, SUPA, Organ Semicond Ctr, St Andrews KY16 9SS, Fife, Scotland

[2] Univ Strathclyde, Dept Pure & Appl Chem, WestCHEM, Glasgow G1 1XL, Lanark, Scotland

来源：

LASER & PHOTONICS REVIEWS | 2013年 / 7卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

distributed feedback laser; organic semiconductor; indirect electrically pumping; triplet exciton; explosive sensing; ORGANIC SEMICONDUCTOR-LASERS; DISTRIBUTED-FEEDBACK; POLYFLUORENE LASERS; CONJUGATED POLYMERS; CHEMOSENSORS;

D O I：

10.1002/lpor.201300072

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 approximate to 30 ns duration LED pump pulses. The laser emits a 533 nm pulsed output beam of approximate to 10 ns duration perpendicular to the polymer film. When exposed to nitroaromatic model explosive vapors at approximate to 8 ppb concentration, the laser shows a 46% change in the surface-emitted output under optimized LED excitation.

引用

页码：L71 / L76

页数：6

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