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Proceedings Paper

Portable optoelectronic gas sensors operating in the mid-IR spectral range (lambda=3 5 um)
Author(s): S. E. Alexandrov; Gennadii A. Gavrilov; A. A. Kapralov; Sergey A. Karandashev; Boris A. Matveev; Galina Yu. Sotnikova; Nikolai M. Stus'
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Paper Abstract

Recently developed mid-IR LED non-dispersive gas analyzers can replace conventional infrared gas monitors. The advantages of novel analyzers are compact size, fast response and low power consumption. InAsSb(P)- and InGaAs(Sb)-based LEDs developed and manufactured at Ioffe Physico-Technical Institute suit for optical gas sensing well because of narrow emission band and the possibility of making LED emission peak spectrally matched with the gas absorption maximum. We present estimations of gas detection limits for LED based optical sensors, sensor head constructions and some experimental results for CO2 and CH4 detectors based on LED-PbSe photoresistor and LED - InAs photodiode optopairs.

Paper Details

Date Published: 5 February 2002
PDF: 7 pages
Proc. SPIE 4680, Second International Conference on Lasers for Measurement and Information Transfer, (5 February 2002); doi: 10.1117/12.454676
Show Author Affiliations
S. E. Alexandrov, A.F. Ioffe Physical-Technical Institute (Russia)
Gennadii A. Gavrilov, A.F. Ioffe Physical-Technical Institute (Russia)
A. A. Kapralov, A.F. Ioffe Physical-Technical Institute (Russia)
Sergey A. Karandashev, A.F. Ioffe Physical-Technical Institute (Russia)
Boris A. Matveev, A.F. Ioffe Physical-Technical Institute (Russia)
Galina Yu. Sotnikova, A.F. Ioffe Physical-Technical Institute (Russia)
Nikolai M. Stus', A.F. Ioffe Physical-Technical Institute (Russia)


Published in SPIE Proceedings Vol. 4680:
Second International Conference on Lasers for Measurement and Information Transfer

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