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Title: Phosphate glass useful in high energy lasers

Abstract

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.degree. C. >0.85 W/mK, a low coefficient of thermal expansion, .alpha..sub.20.degree.-300.degree. C. <80.times.10.sup.-7 /.degree.C., low emission cross section, .sigma.<2.5.times.10.sup.-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): 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.

Inventors:
 [1];  [2]
  1. Clarks Summit, PA
  2. Dupont, PA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
868607
Patent Number(s):
5173456
Assignee:
Schott Glass Technologies, Inc. (Duryea, PA)
Patent Classifications (CPCs):
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
phosphate; glass; useful; energy; lasers; low-or; no-silica; low-; no-alkali; laser; amplifier; multiple; pass; thermal; conductivity; 90; degree; 85; mk; coefficient; expansion; alpha; 20; -300; 80; times; 10; -7; emission; section; sigma; -20; cm; fluorescence; lifetime; tau; 325; secs; wt; doping; consisting; essentially; oxide; composition; basis; mole; 52-72; 0-; 0-25; zno; 0-31; 0-5; na; cs; rb; mgo; 30; cao; 0-20; bao; sro; sb; nb; ln; pbo; sio; 0-3; lanthanide; oxides; 24; unless; 42; ratio; 48-4; oxide composition; thermal conductivity; consisting essentially; thermal expansion; laser amplifier; phosphate glass; energy laser; multiple pass; composition basis; glass useful; fluorescence lifetime; lanthanide oxides; energy lasers; alkali phosphate; /501/252/

Citation Formats

Hayden, Yuiko T, and Guesto-Barnak, Donna. Phosphate glass useful in high energy lasers. United States: N. p., 1992. Web.
Hayden, Yuiko T, & Guesto-Barnak, Donna. Phosphate glass useful in high energy lasers. United States.
Hayden, Yuiko T, and Guesto-Barnak, Donna. Wed . "Phosphate glass useful in high energy lasers". United States. https://www.osti.gov/servlets/purl/868607.
@article{osti_868607,
title = {Phosphate glass useful in high energy lasers},
author = {Hayden, Yuiko T and Guesto-Barnak, Donna},
abstractNote = {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.degree. C. >0.85 W/mK, a low coefficient of thermal expansion, .alpha..sub.20.degree.-300.degree. C. <80.times.10.sup.-7 /.degree.C., low emission cross section, .sigma.<2.5.times.10.sup.-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): 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

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