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Proceedings Paper

Role Of A Tas Aotf In A Commercial Stack Analyzer
Author(s): Robert L. Nelson
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Paper Abstract

A recent breakthrough in the growth of excellent quality single crystal thallium arsenic selenide (TAS) on a production basis has made it possible to build an electronically controlled acousto optic tunable filter (AOTF) capable of operating in the infrared. Such a filter with integral ultrasonic transducer can be used in place of mechanical filter wheels, spinning gas cells, moving mirrors, diffraction gratings and mechanical light choppers. The TAS AOTF produces an electronically controllable narrow band infrared filter capable of being tuned to any infrared frequency desired. It provides a chopped and tuned IR source that can be directed across the stack on any combustion process to measure the concentrations of CO, CO2, SO2, C2H6, CH4, NO, NO2, H2O, etc., simultaneously.

Paper Details

Date Published: 10 June 1987
PDF: 11 pages
Proc. SPIE 0753, Acousto-Optic, Electro-Optic, & Magneto-Optic Devices & Applications, (10 June 1987); doi: 10.1117/12.939948
Show Author Affiliations
Robert L. Nelson, Westinghouse Electric Corporation (United States)

Published in SPIE Proceedings Vol. 0753:
Acousto-Optic, Electro-Optic, & Magneto-Optic Devices & Applications
John A. Lucero, Editor(s)

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