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US4470922A Expired / Lapsed US ⏱️ 0.0 years remaining

Phosphate neodymium glass for laser use

Assignee: FIZICHESKY INSTITUT IMENI LEBEDEVA AKADEMII NAUK SSSR
•
Filing: 1983-08-30
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Granted: 1984-09-11
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Expires: 2003-08-30
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Abstract

Abstract Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one of alkaline metals, and neodymium oxide or a mixture of neodymium oxide and oxide of at least one of the following metals; La, Gd, Lu, Sc, Y, Al, Cr; the ratio between the above-cited components as follows (mol. %): ______________________________________ phosphoric anhydride 64-77 oxide of at least one of alkaline metals 26-8 neodymium oxide or a mixture of neodymium 10-15 oxide with an oxide of at least one of the metals: Ln, Gd, Lu, Sc, Y, Al, Cr. ______________________________________ The herein-proposed invention is intended for producing active elements for lasers of a wide purpose including thin-film and miniature lasers with generation wavelengths within the ranges 1.06 and 1.34μ. Phosphate neodymium glass for laser use of the developed composition can be synthesized in required amounts by a simple method. Application of this glass for making active elements of lasers leads to increasing the efficiency of pumping and specific power output.

Inventors

  • 👤 Boris I. Denker
  • 👤 Alexandr Y. Karasik
  • 👤 Galina V. Maximova
  • 👤 Alexandr A. Maljutin
  • 👤 Vyacheslav V. Osiko
  • 👤 Pavel P. Pashinin
  • 👤 Alexandr M. Prokhorov
  • 👤 Ivan A. Scherbakov

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 17:52
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C4/00; C03C4/0071; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7756; C09K11/7766; C09K11/7772; C09K11/7773

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 46 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15. ______________________________________
Claim 2
Dependent Claim 46 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15. ______________________________________
Claim 3
Dependent Claim 64 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, lanthanum oxide, and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15 ______________________________________ wherein the total amount of neodymium oxide and lanthanum oxide is not more than 15 mol.%.
Claim 4
Dependent Claim 64 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, lanthanum oxide, and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15 ______________________________________ wherein the total amount of neodymium oxide and lanthanum oxide is not more than 15 mol.%.
Claim 5
Dependent Claim 73 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, lanthanum oxide, chromium oxide and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15 chromium oxide up to 5 ______________________________________ wherein the total amount of neodymium oxide, lanthanium oxide and chromium oxide is not more than 15 mol.%.
Claim 6
Dependent Claim 73 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, lanthanum oxide, chromium oxide and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15 chromium oxide up to 5 ______________________________________ wherein the total amount of neodymium oxide, lanthanium oxide and chromium oxide is not more than 15 mol.%.
Claim 7
Dependent Claim 100 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, lanthanum oxide, chromium oxide, an oxide of at least one of metals Gd, Lu, Sc, Y, and Al, and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15 chromium oxide up to 5 ______________________________________ wherein the total amount of neodymium oxide, lanthanium oxide, chromium oxide and oxide of at least one of metals Gd, Lu, Sc, Y and Al is not more than 15 mol.%.
Claim 8
Dependent Claim 100 words
Phosphate neodymium glass for laser use, consisting of phosphoric anhydride, an oxide of at least one alkali metal, lanthanum oxide, chromium oxide, an oxide of at least one of metals Gd, Lu, Sc, Y, and Al, and neodymium oxide with the following relation of the components in mol.%: ______________________________________ phosphoric anhydride 64-77 oxide of at least one alkali metal 8-26 neodymium oxide 10-15 chromium oxide up to 5 ______________________________________ wherein the total amount of neodymium oxide, lanthanium oxide, chromium oxide and oxide of at least one of metals Gd, Lu, Sc, Y and Al is not more than 15 mol.%.

References Cited (Backward Citations)

JPS5159911A Cited
US4022707A Cited
FR2304582A1 Cited
US4075120A Cited
US4076541A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-09-11 1988-03-12 1988-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-09-11 1992-03-12 1992-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-09-11 1996-03-12 1996-09-11 $7700.00 Window Closed / Lapsed

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