An improvement in Fabry-Perot spectrometry

In Fabry-Perot interferometry a large fraction of light can be reflected by the etalon; thus, it is lost for spectroscopic purposes. The present article shows the possibility of recovering this light, collecting it by means of reflectors and sending it back to the etalon under a different angle. Som...

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Bibliographic Details
Published in:Applied optics (2004) 1967-03, Vol.6 (3), p.467-470
Main Authors: Ascoli-Bartoli, U, Benedetti-Michelangeli, G, Demarco, F
Format: Article
Language:English
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Summary:In Fabry-Perot interferometry a large fraction of light can be reflected by the etalon; thus, it is lost for spectroscopic purposes. The present article shows the possibility of recovering this light, collecting it by means of reflectors and sending it back to the etalon under a different angle. Some devices are examined and some experimental proofs of the device are reported. The gain achieved is of the order of five.
ISSN:1559-128X
DOI:10.1364/AO.6.000467