Gallium sulfide glasses

Optical waveguides – Having particular optical characteristic modifying chemical... – Of waveguide cladding

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

501 40, 501904, 501 35, 501 37, 428373, 385142, C03C 323, C03C 410, C03C 1304

Patent

active

053923766

ABSTRACT:
This invention is directed broadly to transparent glasses exhibiting excellent transmission far into the infrared region of the electromagnetic radiation spectrum, those glasses consisting essentially, expressed in terms of mole percent, of 40-80% Ga.sub.2 S.sub.3, 0-35% RS.sub.x, wherein R is at least one network forming cation selected from the group consisting of aluminum, antimony, arsenic, germanium, and indium, 1-50% Ln.sub.2 S.sub.3, wherein Ln is at least one cation selected from the group consisting of a rare earth metal cation and yttrium, 1-45% MS.sub.x, wherein M is at least one modifying metal cation selected from the group consisting of barium, cadmium, calcium, lead, lithium, mercury, potassium, silver, sodium, strontium, thallium, and tin, and 0-10% total chloride and/or fluoride. Glass compositions consisting essentially, expressed in terms of mole percent, of 5-30% Ga.sub.2 S.sub.3, 0-10% R.sub.2 S.sub.3, wherein R is at least one network forming cation selected from the group consisting of aluminum, antimony, arsenic, and indium, 55-94.5% GeS.sub.2, 0.5-25% MS.sub.x, wherein M is at least one modifying metal cation selected from the group consisting of barium, cadmium, calcium, lead, lithium, potassium, silver, sodium, strontium, tin, yttrium, and a rare earth metal of the lanthanide series, 0-10% total selenide, 0-25% total chloride and/or fluoride, and wherein the sulfur and/or selenium content can vary between 85-125% of the stoichiometric value when doped with Pr demonstrate exceptionally high values of .tau..

REFERENCES:
patent: 4188089 (1980-02-01), Gliemeroth et al.
patent: 4612294 (1986-09-01), Katsuyama et al.
patent: 4704371 (1987-11-01), Krolla et al.
patent: 4942144 (1990-07-01), Martin
patent: 5240885 (1993-08-01), Aitken et al.
"Study on Ge-Ga-x(X=S,S3) Glass Systems", Xilai et al., Collected Papers, XIV Intl. Congr. on Glass, 118-127 (1986), no month.
"Le Systeme Ga.sub.2 S.sub.3 -Ag.sub.2 S", Guittard et al., Ann. Chim., 8, 215-225 (1983) no month.
"An EXAFS Structural Approach of the Lanthanum-Gallium-Sulfur Glasses", Benazeth et al., J. Non-Cryst. Solids, 110, 89-100 (1989) no month.
"Verres Formes Par Les Sulfures L.sub.2 S.sub.3 Des Terres Rares Avec Le Sulfure De Gallium Ga.sub.2 S.sub.3 ", Loireau-Lozac'h et al., Mat. Res. Bull., 11, 1489-1496 (1976) no month.
"Systeme GeS.sub.2 -Ga.sub.2 S.sub.3 Diagramme De Phases Obtention Et Proprietes Des Verres", Loireau-Lozac'h et al., Ann. Chim., 10, 101-104 (1975) no month.
"Etude Du Systeme Ga.sub.2 S.sub.3 -Na.sub.2 S", Palazzi, C. R. Acad. Sc. Paris, 229, Serie II, No. 9, 529-532 (1984) no month.
"F NMR Study of [(Ga.sub.2 S.sub.3).sub.0.25 (GeS.sub.2).sub.0.75 ].sub.0.75 (NaF).sub.0.25 Glass", Baidakov et al, Soviet Journal of Glass Physics and Chemistry, 18, No. 4, 322-324 (1992) no month.
"Chalcogenide Glasses in Ga.sub.2 S.sub.3 -GeS.sub.2 -MeF.sub.n Systems", Orkina et al., Glass Physics and Chemistry, 19, No. 3 (1993) no month.
"Active Fiber Research Highlights", Snitzer et al., Fiber Optics Materials Research Program, Rutgers University, p. 32, (Apr. 13, 1993).
"Pr.sup.3+ :La-Ga-S Glass: A Promising Material for 1.3 .mu.m Fiber Amplification", Becker et al., Optical Amp. and Their Appl., PD5, 19-23 (1992) no month.
"Glass Formation and Structual Studies of Chalcogenide Glasses in the Cd-Ga.sub.2 S.sub.3 -GeS.sub.2 System", Barnier et al, Mat'l. Sc. Eng. B7,-pp. 209-214 (1990) no month.
"An EXAFS Study of Sulfide Gallium Based Glasses" Chbani et al, pp. 160-169, 1992, no month.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Gallium sulfide glasses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gallium sulfide glasses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gallium sulfide glasses will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1940769

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.