NASA NTRS · 19890000601
Two-Frequency Electro-Optic Gas-Correlation Spectrometer
Abstract
Acoustical modulator not necessary. Two-frequency electro-optic gas-correlation spectrometer relatively simple. Illumination provided by ordinary lamp, no moving parts, and filtered output of detector is beat-frequency signal directly proportional to correlation between spectra of gases in cells.
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Margolis, Jack S., Rider, David M., Mccleese, Daniel J., Schofield, John T.. 1989-12-01. Two-Frequency Electro-Optic Gas-Correlation Spectrometer. https://ntrs.nasa.gov/citations/19890000601
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