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Detection of gaseous oxygen using temperature tuned laser diodesThe development of an optical differential absorption technique using laser diodes is discussed. The technique is being developed as a solution to overcome the difficulties imposed by conventional liquid rocket propulsion system leak detection such as damage to the engine, cumbersome equipment, and excessive amounts of time. The detection of O2 at atmospheric pressure and temperature using laser diodes is demonstrated. Also, it is shown that, by temperature tuning the laser diode, the wavelength was shifted to a level where the oxygen absorption peaks are found. The levels of transmission determined via experimental means and those calculated from spectral data are found to be in close agreement.
Document ID
19910046027
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fox, Curtis W.
(Cincinnati Univ. OH, United States)
Disimile, Peter J.
(NASA Health Monitoring Technology Center for Space Propulsion Systems; Cincinnati, University OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Annual Health Monitoring Conference for Space Propulsion Systems
Location: Cincinnati, OH
Country: United States
Start Date: November 14, 1990
End Date: November 15, 1990
Accession Number
91A30650
Distribution Limits
Public
Copyright
Other

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