Measurement of gaseous oxygen using diode laser spectroscopy

Kroll, M.; McClintock, J. A.; Ollinger, O.
November 1987
Applied Physics Letters;11/2/1987, Vol. 51 Issue 18, p1465
Academic Journal
A commercial diode laser emitting at ∼761 nm has been used to detect the absorption of individual rotational lines of the A band of atmospheric oxygen. An output signal that is proportional to the O2 partial pressure is extracted using derivative spectroscopy. The method allows measurement of O2 pressure with an uncertainty of ±1.3% of full scale (760 Torr) using a 1-ms time constant.


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