Angular michelson interferometer and optical wavemeter based on

Details Angular michelson interferometer and optical wavemeter based on Angular michelson interferometer and optical wavemeter based on

1993-07-21

1996-12-10

Gonzalez, Frank

Optics: measuring and testing

By particle light scattering

With photocell detection

356358, G01B 902

Patent

active

055836380

ABSTRACT:
The present invention concerns an interferometer for measuring wavelengths using a rotating periscope and a laser of known wavelength. The rotating periscope uses parallel reflectors mounted on a rotating platform. A beam splitter splits an input beam into two optical paths which reflect off the rotating periscope and back reflectors so that the paths will have a path length difference. The beam splitter splits a reference beam from the laser with known wavelength into two reference optical paths which counter-propagate the input beam's optical paths. The light is recombined in a beam splitter to form an interference signal and a reference interference signal so that the input beam's wavelength can be determined.

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