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U.S. Department of Energy
Office of Scientific and Technical Information

Synthetic laser medium

Patent ·
OSTI ID:5887040
A laser medium is particularly useful in high average power solid state lasers. The laser medium includes a chromium dopant and preferably neodymium ions as codopant, and is primarily a gadolinium scandium gallium garnet, or an analog thereof. Divalent cations inhibit spiral morphology as large boules from which the laser medium is derived are grown, and a source of ions convertible between a trivalent state and a tetravalent state at a low ionization energy are in the laser medium to reduce an absorption coefficient at about one micron wavelength otherwise caused by the divalent cations. These divalent cations and convertible ions are dispersed in the laser medium. Preferred convertible ions are provided from titanium or cerium sources.
Assignee:
Dept. of Energy, Washington, DC
Patent Number(s):
US 4824598
OSTI ID:
5887040
Country of Publication:
United States
Language:
English