Abstract

The association of a Fabry-Perot interferometer with a selective modulation spectrometer used as a monochromator makes it possible to consider spectral analysis characterized by a reduction of parasite photon noise taking advantage of the qualities of a F.P. spectrometer (luminosity, apparatus function) without the disadvantage due to the overlapping of orders. In the visible range, the association of a grid F.P. with a Prat spectrometer (using an interferometer originating a transversely doubled source) allows one to obtain a value of the effective ℛΩ product which can be higher than 10π. Such a setup is described. In the near infrared the effective ℛΩ product is only equal to π [because in that range, the method uses fringes at finite distance (Fig. 3) instead of fringes at infinity as in the visible range (Fig. 1)] but, given the noise of cells for the infrared, the throughput advantage is not swamped by photon noise.

© 1985 Optical Society of America

High resolvance interference spectrometry with a high factor of merit in the visible spectrum

H. Dupoisot and R. Prat
Appl. Opt. 18(1) 85-90 (1979)

Phase grid-type interferential spectrometer for the near infrared

Roland Prat, Claude Benoit a la Guillaume, and Georges Bisson
Appl. Opt. 22(22) 3622-3629 (1983)

Luminous flux amplification in Fabry-Perot spectrometry

Henri Dupoisot, Roland Prat, and Serge Slansky
Appl. Opt. 17(24) 3930-3932 (1978)

High-Resolution Absorption Spectroscopy in the Infrared with Fabry-Perot and S.I.S.A.M. Spectrometers

Georges Graner
Appl. Opt. 4(12) 1620-1623 (1965)

Instrument function of the Fabry-Perot spectrometer

P. A. Wilksch
Appl. Opt. 24(10) 1502-1511 (1985)