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16 April 2018 The application of UV LEDs for differential optical absorption spectroscopy
Pavel P. Geiko, Sergey S. Smirnov, Ignatii V. Samokhvalov
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Proceedings Volume 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII; 106141G (2018) https://doi.org/10.1117/12.2303467
Event: XIII International Conference on Atomic and Molecular Pulsed Lasers, 2017, Tomsk, Russia
Abstract
Modern UV LEDs represent a potentially very advantageous alternative to thermal light sources, in particular xenon arc lamps, which are the most common light sources in trace gas-analyzers. So, the light-emitting diodes are very attractive for use of as light sources for Long Path Differential Optical Absorption Spectroscopy (DOAS) measurements of trace gases in the open atmosphere. Recent developments in fibre-coupling telescope technology and the availability of ultraviolet light emitting diodes have now allowed us to construct a portable, long path DOAS instrument for use at remote locations and specifically for measuring degassing from active volcanic systems. First of all, we are talking about the measurement of sulphur dioxide, carbon disulphide and, oxides of chlorine and bromine. The parallel measurements of sulfur dioxide using a certified gas analyzer, were conducted and showed good correlation.
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Pavel P. Geiko, Sergey S. Smirnov, and Ignatii V. Samokhvalov "The application of UV LEDs for differential optical absorption spectroscopy", Proc. SPIE 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII, 106141G (16 April 2018); https://doi.org/10.1117/12.2303467
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KEYWORDS
Absorption
Light emitting diodes
Light sources
Telescopes
Gases
Lamps
UV optics
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