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Title: Phosphate glass useful in high energy lasers

Abstract

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.

Inventors:
;
Issue Date:
OSTI Identifier:
7045230
Patent Number(s):
5173456 A
Application Number:
PPN: US 7-630610
Assignee:
Schott Glass Technologies, Inc., Duryea, PA (United States) PTO; EDB-94-090262
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 20 Dec 1990
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASER MATERIALS; PHOSPHATE GLASS; CHEMICAL COMPOSITION; ALUMINIUM OXIDES; AMPLIFIERS; ANTIMONY OXIDES; ARSENIC OXIDES; BARIUM OXIDES; BORON OXIDES; CALCIUM OXIDES; CESIUM OXIDES; LANTHANUM OXIDES; LEAD OXIDES; LITHIUM OXIDES; MAGNESIUM OXIDES; NIOBIUM OXIDES; POTASSIUM OXIDES; RUBIDIUM OXIDES; SODIUM OXIDES; STRONTIUM OXIDES; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ANTIMONY COMPOUNDS; ARSENIC COMPOUNDS; BARIUM COMPOUNDS; BORON COMPOUNDS; CALCIUM COMPOUNDS; CESIUM COMPOUNDS; CHALCOGENIDES; ELECTRONIC EQUIPMENT; EQUIPMENT; GLASS; LANTHANUM COMPOUNDS; LEAD COMPOUNDS; LITHIUM COMPOUNDS; MAGNESIUM COMPOUNDS; MATERIALS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POTASSIUM COMPOUNDS; RARE EARTH COMPOUNDS; REFRACTORY METAL COMPOUNDS; RUBIDIUM COMPOUNDS; SODIUM COMPOUNDS; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 426002* - Engineering- Lasers & Masers- (1990-)

Citation Formats

Hayden, Y.T., and Guesto-Barnak, D. Phosphate glass useful in high energy lasers. United States: N. p., 1992. Web.
Hayden, Y.T., & Guesto-Barnak, D. Phosphate glass useful in high energy lasers. United States.
Hayden, Y.T., and Guesto-Barnak, D. Tue . "Phosphate glass useful in high energy lasers". United States.
@article{osti_7045230,
title = {Phosphate glass useful in high energy lasers},
author = {Hayden, Y.T. and Guesto-Barnak, D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {12}
}