Accession Number : ADD016237

Title :   Compact, Efficient, Scalable Neodymium Laser Co-Doped with Activator Ions and Pumped by Visible Laser Diodes.

Descriptive Note : Patent, Filed 22 Feb 93, patented 8 Feb 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Scheps, Richard

Report Date : 08 Feb 1994

Pagination or Media Count : 19

Abstract : Efficient, low threshold laser emission from a laser crystal doped with chromium and neodymium ions is obtained when pumped by visible laser diodes in the range of 610 nm to 680 nm. A typical laser Cr,Nd:GSGG crystal having an extraordinarily broad absorption bandwidth allows high pump efficiencies when using visible laser diodes, particularly in comparison to the Nd:YAG laser. The broad absorption bandwidth tolerance of the Cr,Nd:GSGG crystal to the pumping wavelengths allows visible diode pumping of the neodymium transition without regard to the wavelength of the visible diodes. Longitudinal or end-pumping to take advantage of the emission properties of the visible laser diodes, a nearly hemispherical laser resonator configuration and other co-doped Cr,Nd laser host materials are disclosed.

Descriptors :   *DIODES, *EFFICIENCY, *IONS, *LASERS, *NEODYMIUM, *PUMPING, *PATENTS, *DOPING, ABSORPTION, BANDWIDTH, CHROMIUM, COMPARISON, CONFIGURATIONS, CRYSTALS, EMISSION, MATERIALS, PUMPS, RESONATORS, TOLERANCE, TRANSITIONS, VISIBLE SPECTRA, YAG LASERS, ACTIVATION

Subject Categories : Lasers and Masers
      Crystallography
      Inorganic Chemistry
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE