A Fabry-Perot interferometer scanned by elastic deformation

Abstract

This paper describes a Fabry-Perot interferometer design using a very small order of interference. The scanning is obtained by an elastic deformation of a metallic ring. All sources ofinstability have been carefully studied. This interferometer is intended for use at an astronomical telescope. The dimentions of the ring have been computed theoretically in order to minimize flexure due to the weight of the different parts of the morinting in all orientations.