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

RE0365130

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: 3214241 (1965-10-01), Forber et al.
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.
Carcaly, et al., "Verres de Sulfures de Terres Rares Conducteurs Ioniques," Mat. Res. Bull. 15(5):545-50 (1980) no month.
Cervelle, et al., "Variation, Avec la Composition, Des Indices de Refraction des Verres de Sulfures de Lanthane et de Gallium et Indices de Quelques Verres Apparentes," Mat. Res. Bull. 15(2):159-64 (1980) no month.
Flahaut, "Verres de Sulfures de Terres Rares," Verres Refract. 35(4):671-74 (1981) no month.
Barnier, et al., "Etude de Verres de Chalcogenures Contenant de L'Europium Divalent Systeme EuS-Ga.sub.2 S.sub.3 -GeS.sub.2," Mat. Res. Bull. 15(6):689-705 (1980) no month.
Julien, et al., "Raman and Infrared Spectroscopic Studies of Ge-Ga-Ag Sulphide Glasses," Materials Science and Engineering B22(2-3):191-200 (1994) no month.
Baidakov, et al., "Thermal Expansion of Ga.sub.2 S.sub.3 -GeS.sub.2 -PbF.sub.2 Glasses," Soviet Journal of Glass Physics and Chemistry 18(1):91-92 (1992) no month.
Winterberger, et al., "Proprietes Magnetiques de Phases Amorphes de Composition 1,8 Ga.sub.2 S.sub.3 -(LaGd).sub.2 S.sub.3," C.R. Acad. Sc. Paris 292(7):563-66 (1981) no month.
Benazeth, et al., "An EXAFS Structural Approach of the Lanthanum-Gallium-Sulfur Glasses," J. Non-Cryst. Solids 110:89-110 (1989) no month.
Xilai et al., "Study of Ge-Ga-x(X.dbd.S,S3) Glass Systems," Collected Papers XIV Intl. Congr. on Glass 118-27 (1986) no month.
Guittard, et al., "Le Systeme Ga.sub.2 S.sub.3 -Ag.sub.2 S," Ann. Chim. 8:215-25 (1983) no month.
Loireau-Lozac'h, et al., "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," Mat. Res. Bull. 11:1489-96 (1976) no month.
Loireau-Lozac'h, et al., "Systeme GeS.sub.2 -Ga.sub.2 S.sub.3 Diagramme De Phases Obtention Et Proprietes Des Verres," Ann. Chim. 10:101-04 (1975) no month.
Palazzi, "Etude Du Systeme Ga.sub.2 S.sub.3 -Na.sub.2 S," C.R. Acad. Sc. Paris 229(9):529-32 (1984) no month.
Baidakov, et al., ".sup.19 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," Soviet Journal of Glass Physics and Chemistry 18(4):322-24 (1992) no month.
Orkina, et al., "Chalcogenide Glasses in Ga.sub.2 S.sub.3 -GeS.sub.2 -MeF.sub.n Systems," Glass Physics and Chemistry 19(3):228-34 (1993) no month.
Snitzer, et al., "Active Fiber Research Highlights," Fiber Optics Materials Research Program, Rutgers University, p. 32 (1993) no month.
Becker, et al., "Pr.sup.3+ :La-Ga-S Glass: A Promising Material for 1.3 .mu.m Fiber Amplification," Optical Amp. and Their Appl. PD5:19-23 (1992) no month.
Barnier, et al., "Glass Formation and Structural Studies of Chalcogenide Glasses in the CdS-Ga.sub.2 S.sub.3 -GeS.sub.2 System," Materials Science and Engineering B7(3):209-14 (1990) no month.
Chbani, et al., "An EXAFS Study of Sulfide Gallium Based Glasses," The Physics of Non-Crystalline Solids pp. 160-69 (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-556536

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