Silica and boron-containing ultraphosphate laser glass with low concentration quenching and improved thermal shock resistance
An optical glass is described having a refractive index, nd>1.520; an Abbe number, Vd, >60; a density <3.0 g/cm/sup 3/, a thermal expansion coefficient, a less than or equal to 110 x 10/sup -7/sup 0//C/sup -1/; a Young's Modulus, E, < 70 x 10/sup 3/N/mm/sup 2/; a Poisson's Ratio, ..nu.., 0.28; a thermal conductivity, K, > 0.5 W/m K; a thermal FOM = (1-..nu..) . K/..cap alpha..-E > 0.7, a first e-folding time of the Nd/sup 3+/ fluorescence at 0.5 wt% Nd/sub 2/O/sub 3/ > 375 ..mu..sec, and a first e-folding time of the Nd/sup 3+/ fluorescence at 10 wt.% > 175 ..mu..sec. consisting essentially of, in mol.%: P/sub 2/O/sub 5/:40-70%; SiO/sub 2/:0-20%; B/sub 2/O/sub 3/:5-20%; Sum SiO/sub 2/ + B/sub 2/O/sub 3/:5-35%; Sum Li/sub 2/O + Na/sub 2/O + K/sub 2/O:5-20%; Sum La/sub 2/O/sub 3/ + Nd/sub 2/O/sub 3/:3-10%; Sum MgO + CaO + SrO + BaO + ZnO:0-10%.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4661284
- OSTI ID:
- 6507692
- Country of Publication:
- United States
- Language:
- English
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Silica and boron-containing ultraphosphate laser glass with low concentration quenching and improved thermal shock resistance
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Related Subjects
360601 -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
BORON COMPOUNDS
BORON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
DENSITY
EXPANSION
FLUORESCENCE
GLASS
LASER MATERIALS
LASERS
LUMINESCENCE
MATERIALS
MECHANICAL PROPERTIES
MINERALS
NEODYMIUM LASERS
OPTICAL PROPERTIES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
QUANTITY RATIO
QUENCHING
REFRACTIVITY
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOLID STATE LASERS
THERMAL CONDUCTIVITY
THERMAL EXPANSION
THERMAL SHOCK
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE
YOUNG MODULUS