Polarised interferometric spectrometry for the millimetre and submillimetre spectrum
1970
Abstract A method of interferometric spectrometry based on polarising beam-splitters is described. This allows operation over a wide range of spectral frequency without strong variations in efficiency, and also the suppression of the mean-level of the interferogram, spurious modulation of which is a major source of error in conventional methods. Interferograms obtained with this kind of spectrometer, in the far infra-red, are presented.
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