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Proceedings Paper

Ground State Depleted (GSD) Solid State Lasers: Principles, Characteristics, And Scaling
Author(s): William F. Kruoke; L. L. Chase
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Paper Abstract

A novel class of rare earth doped solid state lasers is described. The Ground State Depleted (GSD) laser is pumped by an intense (>tens kW/cm2) narrowband (<few nm) laser source and is characterized by: (1) an unusually low laser ion doping density (5-10 x 1018 ions/cc), (2) an unusually large fractional excited population inversion density (4-8 x 1018 ions/cc or >75%), (3) a gain element that is optically thick at the pump wavelength, (4) a gain element that has a substantially uniform gain distribution due to a bleaching of the pump transition at the pump intensity utilized. These features enable efficient room temperature operation of rare earth ion laser transitions terminating on the ground manifold. The relationships between laser parameters (cross sections, saturation fluences and fluxes, bleaching wave velocities, etc.) are given and laser performance scaling relationships are presented and discussed.

Paper Details

Date Published: 6 July 1989
PDF: 16 pages
Proc. SPIE 1040, High Power and Solid State Lasers II, (6 July 1989); doi: 10.1117/12.951170
Show Author Affiliations
William F. Kruoke, Lawrence Livermore National Laboratory (United States)
L. L. Chase, Lawrence Livermore National Laboratory (United States)

Published in SPIE Proceedings Vol. 1040:
High Power and Solid State Lasers II
George Dube, Editor(s)

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