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

Report Date:

1997-04-29

Pagination or Media Count:

17.0

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.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE