Rare earth soluble telluride glasses

Details Rare earth soluble telluride glasses Rare earth soluble telluride glasses

1997-12-24

2000-01-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 37, C03C 332, C03C 1304

Patent

active

060157658

ABSTRACT:
A telluride glass with glass transition temperature above 150.degree. C., fference between the crystallization temperature and the glass transition temperature of above 200.degree. C., and extended transmission in the infrared region of radiation of up to 20 microns having, on mol basis, 20-60% tellurium, 10-50% arsenic, 4-35% germanium, 0.5-15% gallium, up to 15% iodine, and up to 30% selenium. All or part of the gallium can be replaced with indium and the glass can contain up to 5%, based on the weight of the glass components, of a rare earth ion to render the glass fluorescent. Optical fibers drawn from these glasses have shown mid infrared fluorescence and may have as a bright source of IR light.

REFERENCES:
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patent: 3920461 (1975-11-01), Asahara et al.
patent: 4154503 (1979-05-01), Lettington et al.
patent: 4492763 (1985-01-01), Trotta et al.
patent: 4704371 (1987-11-01), Krolla et al.
patent: 4942144 (1990-07-01), Martin
patent: 5352639 (1994-10-01), Lucas et al.
patent: 5779757 (1998-07-01), Sanghera et al.

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