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Chapter 13:
Fabry-Perot Interferometer Spectrometers
The Fabry-Perot interferometer has been used as a spectrometer that has very high resolving power and large throughput, although it tends to have very little available field of view. It has, therefore, not been used much, if at all, as an imaging spectrometer. The limitations are described here. 13.1 Description In its simplest form the FPI is a pair of plane parallel plates with an air space between them, as shown in Fig. 13.1. Collimated light enters and is reflected and re-reflected and re-re-reflected and … (see Fig. 13.2 for an off-axis construction that shows these multiple reflections). There is multiple-beam interference arising from the interaction of all these reflected beams.
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