Phosphate glass useful in high power lasers
Abstract
A low- or no-silica phosphate glass useful as a laser medium and having a high thermal conductivity, K.sub.90.degree. C. >0.8 W/mK, and a low coefficient of thermal expansion, .alpha..sub.20.degree.-40.degree. C. <80.times.10.sup.-7 /.degree.C., consists essentially of (on a batch composition basis): 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.degree. C. >0.8 W/mK and .alpha..sub.20.degree.-40.degree. C. <80.times.10.sup.-7 /.degree.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.
- Inventors:
-
- South Abington Township, Lackawana County, PA
- Avoca, PA
- Hollidaysburg, PA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 867409
- Patent Number(s):
- 4929387
- Assignee:
- Schott Glass Technologies, Inc. (Duryea, PA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- phosphate; glass; useful; power; lasers; low-; no-silica; laser; medium; thermal; conductivity; 90; degree; mk; coefficient; expansion; alpha; 20; -40; 80; times; 10; -7; consists; essentially; batch; composition; basis; mole; 45-70; 15-35; na; 0-10; 10-15; 01-6; 0-6; sio; 0-8; mgo; 0-18; cao; 0-15; sro; 0-9; bao; zno; amounts; providing; average; alkali; metal; ionic; radius; sufficiently; whereby; melted; contact; silica-containing; surface; final; contains; additional; silica; derived; melting; replaced; lasing; species; power lasers; composition contains; thermal conductivity; thermal expansion; alkali metal; glass composition; consists essentially; power laser; laser medium; phosphate glass; composition basis; glass useful; ionic radius; batch composition; /252/501/
Citation Formats
Hayden, Joseph S, Sapak, David L, and Ward, Julia M. Phosphate glass useful in high power lasers. United States: N. p., 1990.
Web.
Hayden, Joseph S, Sapak, David L, & Ward, Julia M. Phosphate glass useful in high power lasers. United States.
Hayden, Joseph S, Sapak, David L, and Ward, Julia M. Mon .
"Phosphate glass useful in high power lasers". United States. https://www.osti.gov/servlets/purl/867409.
@article{osti_867409,
title = {Phosphate glass useful in high power lasers},
author = {Hayden, Joseph S and Sapak, David L and Ward, Julia M},
abstractNote = {A low- or no-silica phosphate glass useful as a laser medium and having a high thermal conductivity, K.sub.90.degree. C. >0.8 W/mK, and a low coefficient of thermal expansion, .alpha..sub.20.degree.-40.degree. C. <80.times.10.sup.-7 /.degree.C., consists essentially of (on a batch composition basis): 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.degree. C. >0.8 W/mK and .alpha..sub.20.degree.-40.degree. C. <80.times.10.sup.-7 /.degree.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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1990},
month = {Mon Jan 01 00:00:00 EST 1990}
}