Accession Number : ADD018507

Title :   Narrow Band Laser Speckle Suppression.

Descriptive Note : Patent application, filed 29 Apr 97,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Moon, John A ; Busse, Lynda E ; Aggarwal, Ishwar D

PDF Url : ADD018507

Report Date : 29 Apr 1997

Pagination or Media Count : 17

Abstract : A method and apparatus for reducing points of zero intensity, i.e. speckle pattern, emerging from a multimode fiber. The apparatus comprises a beam deflector for rotating an input beam in a conical shape around a launch lens for projecting the beam into the fiber. The rotation of the beam further incorporates the use of two tilting mirrors being 90 deg out of phase to ensure a conical rotation. The conical rotation of the beam deflector ensures that the lens aberrations, which are rotationally symmetric, do not play a factor in beam alignment into the fiber aperture.

Descriptors :   *PATENT APPLICATIONS, *LASER BEAMS, FIBER OPTICS, ELECTROOPTICS, ALIGNMENT, MULTIMODE, SPECULAR REFLECTION, LASER MIRRORS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE