Accession Number : ADD014527

Title :   A Room-Temperature, Laser Diode-Pumped, Q-Switched, 2 Micron, Thulium-Doped, Solid State Laser.

Descriptive Note : Patent Application, Filed 30 Mar 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

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

Report Date : 30 Mar 1990

Pagination or Media Count : 18

Abstract : A room-temperature, laser-pumped, Q-switched, thulium-doped, solid state laser for producing pulses of laser emission at substantially 2 microns is disclosed. In a preferred embodiment, the laser comprises: a laser cavity defined by first and second reflective path elements opposing each other on a common axis to form a reflective path there between; a laser crystal disposed in the laser cavity, the laser crystal having a host material doped with an amount of thulium activator ions sufficient to produce a laser emission at substantially 2 microns from the 3F4 to 3H6 laser transition in the thulium activator ions when the laser crystal is enabled and is pumped by a CW pump beam at a preselected wavelength; a pump laser for pumping the laser crystal with the CW pump beam at the preselected wavelength; and a Q-switch disposed in the laser cavity between the laser crystal and the second reflective element for periodically enabling the laser crystal to produce a pulsed laser emission at substantially 2 microns when the crystal is also pumped by the CW pump beam. Patent applications. (jhd)

Descriptors :   *PATENT APPLICATIONS, *PULSED LASERS, *SOLID STATE LASERS, ACTIVATION, CRYSTALS, EMISSION, IONS, LASER CAVITIES, LASER PUMPING, Q SWITCHING, ROOM TEMPERATURE, DOPING, PATHS, PULSES, REFLECTION, REFLECTIVITY, THULIUM

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE