Method of and arrangement for an interferometer

Details Method of and arrangement for an interferometer Method of and arrangement for an interferometer

1984-12-20

1987-03-24

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

G01J 345

Patent

active

046521305

ABSTRACT:
In the inventive interferometers, based on the principle of Michelson, an teration of pathlength is obtained through rotation of a movable mirror, where this mirror is a retroreflector; or an eccentricaly rotating retroreflector laterally deviates a non centric, impinging beam more or less, depending on the angular position of the retroreflector and directs said beam through a fixed wedge of refractive material, whose index of refraction is different from the index of refraction of air. Hence with the inventive interferometers no mechanical back and forth movement of a mirror or wedge is performed. Interferometers of this kind can be used for spectroscopy in a wide region of the electromagnetic spectrum; examples are the spectral analysis in chemistry or the astronomy (for instance in the infrared region).

REFERENCES:
patent: 4383762 (1983-05-01), Burkert

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