Refractometer associated with the fabry-perot spectrometer

Gagné, J. M.; Giroux, M.; Saint-Dizier, J. P.

This paper describes the principles, realization, and characteristics of a refractometer used as a reference for measuring the scanning of a high resolution, photoelectric Fabry-Perot spectrometer. The precision of the measurements on this refractometer is approximately one order of magnitude greater than that obtainable with other instruments.