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Systematic errors in dispersive Fourier transform spectroscopy.

Birch, J R (1994) Systematic errors in dispersive Fourier transform spectroscopy. NPL Report. DES 133

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A description is given of some of the more significant systematic errors to which the technique of dispersive Fourier transform spectroscopy is susceptible, when used for transmission measurements. Most of the errors only manifest themselves in the refraction spectrum, as any effect in the absorption spectrum is generally at levels that are less than the random errors. It is shown that most of the errors can either be ignored as being too small, can be made negligibly small by good instrumental design, or can be corrected for the effects that are introduced. The exceptions to this are those that arise from the measurement of the thickness of the specimen. These can introduce errors that are as large as 10-4 into the derived values of the refractive index. These can be up to an order of magnitude larger than the corresponding random errors.

Item Type: Report/Guide (NPL Report)
NPL Report No.: DES 133
Subjects: Electromagnetics
Last Modified: 02 Feb 2018 13:19
URI: http://eprintspublications.npl.co.uk/id/eprint/328

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