Phosphate glass useful in high power lasers
A low- or no-silica phosphate glass useful as a laser medium and having a high thermal conductivity, K[sub 90 C] > 0.8 W/mK, and a low coefficient of thermal expansion, [alpha][sub 20--40 C] < 80[times]10[sup [minus]7]/C, consists essentially of (on a batch composition basis Mole %): P[sub 2]O[sub 5], 45-70; Li[sub 2]O, 15-35; Na[sub 2]O, 0-10; Al[sub 2]O[sub 3], 10-15; Nd[sub 2]O[sub 3], 0.01-6; La[sub 2]O[sub 3], 0-6; SiO[sub 2], 0-8; B[sub 2]O[sub 3], 0-8; MgO, 0-18; CaO, 0-15; SrO, 0-9; BaO, 0-9; ZnO, 0-15; the amounts of Li[sub 2]O and Na[sub 2]O providing an average alkali metal ionic radius sufficiently low whereby said glass has K[sub 90 C] > 0.8 W/mK and [alpha][sub 20--40 C] < 80[times]10[sup [minus]7]/C, and wherein, when the batch composition is melted in contact with a silica-containing surface, the final glass composition contains at most about 3.5 mole % of additional silica derived from such contact during melting. The Nd[sub 2]O[sub 3] can be replaced by other lasing species. 3 figs.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Schott Glass Technologies, Inc., Duryea, PA (United States)
- Patent Number(s):
- US 4929387; A
- Application Number:
- PPN: US 7-331782
- OSTI ID:
- 7068377
- Country of Publication:
- United States
- Language:
- English
Similar Records
Phosphate glass useful in high energy lasers
Phosphate glass useful in high energy lasers
Related Subjects
360606 -- Other Materials-- Physical Properties-- (1992-)
42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
BORON COMPOUNDS
BORON OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CONCENTRATION RATIO
EXPANSION
GLASS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LASER MATERIALS
LITHIUM COMPOUNDS
LITHIUM OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOSPHATE GLASS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
THERMAL CONDUCTIVITY
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
ZINC COMPOUNDS
ZINC OXIDES