Accession Number : ADD016000

Title :   Tunable Lasers Pumped by Visible Laser Diodes.

Descriptive Note : Patent, Filed 28 May 92, patented 28 Sep 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Scheps, Richard

Report Date : 28 Sep 1993

Pagination or Media Count : 12

Abstract : A laser having a Cr3+ doped Colquiriite mineral host gain element, such as Cr:LiCAF, Cr:LiSAF or Cr:LiSGAF, is pumped by the pumping beam from at least one visible laser diode to provide tunable laser emission. The Cr3+ doped Colquiriite mineral host gain element has an exterior face provided with a dichroic coating highly transmissive to the pumping beam and highly reflective to the tunable laser emission and has an interior face provided with an AR coating antireflective to the tunable laser emission. An output coupler mirror, provided with a coating that is partially reflective to the tunable laser emission, has an appropriate radius of curvature and is appropriately located to concentrate reflected tunable laser emission in a waist in a resonator mode on an exterior face of the Cr3+ doped Colquiriite gain element to assure the visible light diode pumping thereof. A lens is disposed to receive the pumping beam to focus it at or near the waist on the exterior face of the Cr3+ doped Colquiriite gain element.

Descriptors :   *TUNABLE LASERS, *PATENTS, *LASER PUMPING, *ANTIREFLECTION COATINGS, COATINGS, COUPLERS, CURVATURE, DIODES, EMISSION, GAIN, LASERS, LIGHT, MINERALS, MIRRORS, PUMPING, RESONATORS, SEMICONDUCTOR LASERS, SEMICONDUCTOR DIODES, CHROMIUM, DOPING, DICHROISM

Subject Categories : Lasers and Masers
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE