A Multichannel Fabry-Perot Interferometer

Abstract

The advantages of the Fabry-Perot interferometer in resolution and luminosity are combined with those of a multichannel spectrometer for the investigation of spectral line shapes and shifts as a rapid function of time. The heart of the instrument is an array of concentric annular mirrors which perform the wavenumber separation, sending the light from each channel into a separate photomultiplier.