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Beam-splitter effects in dual-input Fourier transform spectroscopy

Spencer, Locke, Naylor, David A., Ade, Peter A. R. and Zhang, Jin 2011. Beam-splitter effects in dual-input Fourier transform spectroscopy. Journal of the Optical Society of America A 28 (9) , pp. 1805-1811. 10.1364/JOSAA.28.0018051

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Abstract

In general, a dual-input Fourier transform spectrometer (FTS) produces interferograms that have components of both even and odd symmetry. In addition to the desired interferogram contribution due to the source under study, which has even symmetry, each FTS output is often found to exhibit a component of odd symmetry that arises from the fact that the beam splitter is not ideal. Additionally, the beam splitter itself can be a source of emission that produces a modulated signal component at the output of the interferometer. An exploration of the effects, and correction, of nonideal beam-splitter characteristics in FTS interferograms is presented, including examples from the Herschel/SPIRE submillimeter wavelength imaging FTS.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Optical Society of America
ISSN: 1084-7529
Last Modified: 10 Oct 2017 14:33
URI: http://orca.cf.ac.uk/id/eprint/34381

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