Phosphate glass useful in high energy lasers

Patent · Mon Dec 21 23:00:00 EST 1992

OSTI ID:7045230

Hayden, Y T; Guesto-Barnak, D

Disclosed is a low-or no-silica, low- or no-alkali phosphate glass useful as a laser amplifier in a multiple pass, high energy laser system having a high thermal conductivity, K[sub 90 C] >0.85 W/mK, a low coefficient of thermal expansion, [alpha][sub 20-300 C] <80[times]10[sup [minus]7]/C, low emission cross section, [sigma]<2.5[times]10[sup [minus]20] cm[sup 2], and a high fluorescence lifetime, [tau]>325 [mu]secs at 3 wt. % Nd doping, consisting essentially of (on an oxide composition basis): (Mole %) P[sub 2]O[sub 5], (52-72); Al[sub 2]O[sub 3], (0-<20); B[sub 2]O[sub 3], (>0-25); ZnO, (0-31); Li[sub 2]O, (0-5); K[sub 2]O, (0-5); Na[sub 2]O, (0-5); Cs[sub 2]O, (0-5); Rb[sub 2]O, (0-5); MgO, (>0-<30); CaO, (0-20); BaO, (0-20); SrO, (0-<20); Sb[sub 2]O[sub 3], (0-<1); As[sub 2]O[sub 3], (0-<1); Nb[sub 2]O[sub 5], (0-<1); Ln[sub 2]O[sub 3], (up to 6.5); PbO, (0-<5); and SiO[sub 2], (0-3); wherein Ln[sub 2]O[sub 3] is the sum of lanthanide oxides; [Sigma]R[sub 2]O is <5, R being Li, Na, K, Cs, and Rb; the sum of Al[sub 2]O[sub 3] and MgO is <24 unless [Sigma]R[sub 2]O is 0, then the sum of Al[sub 2]O[sub 3] and MgO is <42; and the ratio of MgO to B[sub 2]O[sub 3] is 0.48-4.20. 7 figs.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Schott Glass Technologies, Inc., Duryea, PA (United States)
• Patent Number(s): A; US 5173456
• Application Number: PPN: US 7-630610
• OSTI ID: 7045230
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers &amp; Masers-- (1990-)
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMPLIFIERS
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
ARSENIC COMPOUNDS
ARSENIC OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
BORON COMPOUNDS
BORON OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CESIUM COMPOUNDS
CESIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
ELECTRONIC EQUIPMENT
EQUIPMENT
GLASS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LASER MATERIALS
LEAD COMPOUNDS
LEAD OXIDES
LITHIUM COMPOUNDS
LITHIUM OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOSPHATE GLASS
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RUBIDIUM COMPOUNDS
RUBIDIUM OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TRANSITION ELEMENT COMPOUNDS