Accession Number : ADD004093

Title :   Compact Three-Beam Interferometer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Sica,Louis , Jr

Report Date : 17 May 1977

Pagination or Media Count : 4

Abstract : An interferometer which retains the lateral vibration rejection capability of a three-beam interferometer and maintains a large work space between the beams while improving longitudinal vibration noise rejection is described. The system makes use of beam splitting assemblies which split the source laser beam into three beams and then recombine the beams. The recombination assembly includes wedges which introduce a small angle between the outer beams so that a small number of fringes are formed across the diameter of the beam.

Descriptors :   *Patents, *Interferometers, *Laser beams, *Beam splitting, Optical equipment components, Optical instruments, Vibration

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE