US4120814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorophosphate-base laser glasses
Assignee: Hoya Corp
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Filing: 1977-07-27
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Granted: 1978-10-17
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Expires: 1997-07-27
Abstract
Abstract A fluorophosphate-base laser glass having a low non-linear refractive index coefficient and a low liquid phase temperature and comprising a glass composed of 5 to 25% 1/2P 2 O 5 and the remainder of metal fluorides and 0.01 to 3% 1/2Nd 2 O 3 being incorporated into the glass, and more particularly a fluorophosphate-base laser glass comprising 5 to 25% 1/2P 2 O 5 , 20 to 35% AlF 3 , 0 to 5% YF 3 , 22 to 55% BaF 2 +SrF 2 +CaF 2 +MgF 2 , 0 to 25% NaF+LiF+KF and 0.01 to 3% 1/2Nd 2 O 3 , all % being cationic %.
Inventors
- 👤 Tetsuro Izumitani
- 👤 Michitaka Tsutome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/23; C03C3/247; C03C4/00; C03C4/0071
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
137 words
A stable fluorophosphate-base laser glass having a non-linear refractive index coefficient of 0.5 to 0.7 × 10 -13 e.s.u. and a liquid phase temperature of 550° to 750° C. consisting essentially of 5 to 25% 1/2P 2 O 5 and the remainder being a mixture of fluorides of the metals Al, Ba, Sr and Ca, and 0 to 25% fluorides of Na, K and Li and 0 to 5% of each of the fluorides of Y, La and Mg, and 0.01 to 3% of at least one laser oscillation component selected from the group consisting of 1/2 Er 2 O 3 , 1/2 Eu 2 O 3 and 1/2Nd 2 O 3 incorporated into said glass, said percentages being cationic %, said glass not containing any glass forming component which would adversely affect laser oscillation efficiency thereof.
Claim 2
Dependent Claim
137 words
A stable fluorophosphate-base laser glass having a non-linear refractive index coefficient of 0.5 to 0.7 × 10 -13 e.s.u. and a liquid phase temperature of 550° to 750° C. consisting essentially of 5 to 25% 1/2P 2 O 5 and the remainder being a mixture of fluorides of the metals Al, Ba, Sr and Ca, and 0 to 25% fluorides of Na, K and Li and 0 to 5% of each of the fluorides of Y, La and Mg, and 0.01 to 3% of at least one laser oscillation component selected from the group consisting of 1/2 Er 2 O 3 , 1/2 Eu 2 O 3 and 1/2Nd 2 O 3 incorporated into said glass, said percentages being cationic %, said glass not containing any glass forming component which would adversely affect laser oscillation efficiency thereof.
Claim 3
Dependent Claim
31 words
The fluorophosphate-base laser glass as claimed in claim 1, further including 0.1 to 4 cationic % MoO 3 +TiO 2 +1/2Nb 2 O 5 as components for preventing occurrence of solarization.
Claim 4
Dependent Claim
20 words
The fluorophosphate-base laser glass as claimed in claim 1, wherein said laser oscillation component is 1/2Nd 2 O 3 .
Claim 5
Dependent Claim
125 words
A stable fluorophosphate-base laser glass having a non-linear refractive index coefficient of 0.5 to 0.7 × 10 -13 e.s.u. and a liquid phase temperature of 550° to 750° C. consisting essentially of 5 to 25% 1/2P 2 O 5 , 20 to 35% AlF 3 , 0 to 5% YF 3 , 22 to 55% BaF 2 + SrF 2 + CaF 2 + MgF 2 , 0 to 25% NaF+LiF+KF and 0.01 to 3% of at least one laser oscillation component selected from the group consisting of 1/2 Er 2 O 3 , 1/2Eu 2 O 3 and 1/2Nd 2 O 3 , said percentages being cationic %, said glass not containing any glass forming component which would adversely affect laser oscillation efficiency thereof.
Claim 6
Dependent Claim
125 words
A stable fluorophosphate-base laser glass having a non-linear refractive index coefficient of 0.5 to 0.7 × 10 -13 e.s.u. and a liquid phase temperature of 550° to 750° C. consisting essentially of 5 to 25% 1/2P 2 O 5 , 20 to 35% AlF 3 , 0 to 5% YF 3 , 22 to 55% BaF 2 + SrF 2 + CaF 2 + MgF 2 , 0 to 25% NaF+LiF+KF and 0.01 to 3% of at least one laser oscillation component selected from the group consisting of 1/2 Er 2 O 3 , 1/2Eu 2 O 3 and 1/2Nd 2 O 3 , said percentages being cationic %, said glass not containing any glass forming component which would adversely affect laser oscillation efficiency thereof.
Claim 7
Dependent Claim
32 words
The fluorophosphate-base laser glass as claimed in claim 4, further including 0.1 to 4 cationic % MoO 3 +TiO 2 +1/2Nb 2 O 5 as components for preventing the occurrence of solarization.
Claim 8
Dependent Claim
20 words
The fluorophosphate-base laser glass as claimed in claim 4, wherein said laser oscillation component is 1/2Nd 2 O 3 .
Claim 9
Dependent Claim
145 words
A stable fluorphosphate-base laser glass having a non-linear refractive index coefficient of 0.5 to 0.7 × 10 -13 e.s.u. and a liquid phase temperature of 550° to 750° C. consisting essentially of 5 to 25% 1/2P 2 O 5 , 20 to 35% AlF 3 , 0 to 5% YF 3 , 22 to 55% BaF 2 +SrF 2 +CaF 2 +MgF 2 with 2 to 12% BaF, 4 to 18% SrF 2 , 15 to 28% CaF 2 and 0 to 5% MgF 2 , 0 to 25% NaF+LiF+KF and 0.01 to 3% of at least one laser oscillation component selected from the group consisting of 1/2 Er 2 O 3 , 1/2 Eu 2 O 3 and 1/2Nd 2 O 3 , said percentages being cationic %, said glass not containing any glass forming component which would adversely affect laser oscillation efficiency thereof.
Claim 10
Dependent Claim
145 words
A stable fluorphosphate-base laser glass having a non-linear refractive index coefficient of 0.5 to 0.7 × 10 -13 e.s.u. and a liquid phase temperature of 550° to 750° C. consisting essentially of 5 to 25% 1/2P 2 O 5 , 20 to 35% AlF 3 , 0 to 5% YF 3 , 22 to 55% BaF 2 +SrF 2 +CaF 2 +MgF 2 with 2 to 12% BaF, 4 to 18% SrF 2 , 15 to 28% CaF 2 and 0 to 5% MgF 2 , 0 to 25% NaF+LiF+KF and 0.01 to 3% of at least one laser oscillation component selected from the group consisting of 1/2 Er 2 O 3 , 1/2 Eu 2 O 3 and 1/2Nd 2 O 3 , said percentages being cationic %, said glass not containing any glass forming component which would adversely affect laser oscillation efficiency thereof.
Claim 11
Dependent Claim
32 words
The fluorophosphate-base laser glass as claimed in claim 7, further comprising 0.1 to 4 cationic % MoO 3 +TiO 2 +1/2Nb 2 O 5 as components for preventing the occurrence of solarization.
Claim 12
Dependent Claim
20 words
The fluorophosphate-base laser glass as claimed in claim 7, wherein said laser oscillation component is 1/2Nd 2 O 3 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |