Accession Number : ADD015310

Title :   Resonantly Pumped, Erbium-Doped, 2.8 Micron Solid State Laser with High Slope Efficiency.

Descriptive Note : Patent, Filed 23 May 91, patented 4 Feb 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Esterowitz, Leon ; Stoneman, Robert C

Report Date : 04 Feb 1992

Pagination or Media Count : 10

Abstract : A laser system and method for producing a laser emission at a wavelength of substantially 2.8 microns is disclosed. In a preferred embodiment of the invention, the laser system comprises a crystal having a host material doped with erbium; a laser cavity defined by first and second reflective elements at opposing ends of the crystal to form a reflective path therebetween; and resonant pumping means for directly pumping the 4I11/2 upper laser state of the erbium with a pump beam at a preselected wavelength to cause the erbium-doped crystal to produce a laser emission corresponding to the 4I 11/2 4I 13/2 laser transition having a wavelength of substantially 2.8 microns, a portion of the laser emission at substantially 2.8 microns being outputted from one of the first and second reflective elements.

Descriptors :   *EMISSION CONTROL, *LASERS, CRYSTALS, ERBIUM, INVENTIONS, LASER CAVITIES, PUMPING, PUMPS, TRANSITIONS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE