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US4371965A
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High neodymium content aluminophosphate glass and laser
Assignee: Verizon Laboratories Inc
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Filing: 1978-08-07
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Granted: 1983-02-01
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Expires: 1998-08-07
Abstract
Abstract Miniature lasers comprise a high neodymium content aluminophosphate glass composition as the active lasing medium, disposed in an optical cavity defined by a first totally reflective mirror and a second partially transmissive mirror, and an optical pumping means which can be either a flashlamp or a light emitting diode. The aluminophosphate glass laser material consists essentially of from 0.01 to 13 mole percent neodymium oxide, from 25 to 35 mole percent aluminum oxide, and from 60 to 70 mole percent phosphorus pentoxide.
Inventors
- 👤 Alexander Lempicki
- 👤 Richard M. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17; C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/17; C03C4/00; C03C4/0071
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A laser comprising an optical resonance cavity defined by a first totally reflective mirror and a second partially transmissive mirror, a glass laser medium disposed within said optical resonance cavity, said glass laser medium consisting of from about 0.01 mole percent to about 13 mole percent neodymium oxide, from about 25 mole percent to about 35 mole percent aluminum oxide, and from about 60 mole percent to about 70 mole percent phosphorus pentoxide, and an optical pumping means disposed adjacent to said optical resonance cavity for exciting said glass laser medium to emit stimulated radiation.
Claim 2
Dependent Claim
95 words
A laser comprising an optical resonance cavity defined by a first totally reflective mirror and a second partially transmissive mirror, a glass laser medium disposed within said optical resonance cavity, said glass laser medium consisting of from about 0.01 mole percent to about 13 mole percent neodymium oxide, from about 25 mole percent to about 35 mole percent aluminum oxide, and from about 60 mole percent to about 70 mole percent phosphorus pentoxide, and an optical pumping means disposed adjacent to said optical resonance cavity for exciting said glass laser medium to emit stimulated radiation.
Claim 3
Dependent Claim
34 words
The laser of claim 1 wherein said glass laser medium contains aluminum oxide and phosphorus pentoxide in amounts to provide an atom ratio of aluminum to phosphorus of from about 0.40 to about 0.48.
Claim 4
Dependent Claim
20 words
The laser of claim 2 wherein said neodymium oxide is present in an amount of at least 10 mole percent.
Claim 5
Dependent Claim
13 words
The laser of claim 1 wherein said optical pumping means comprises a flashlamp.
Claim 6
Dependent Claim
17 words
The laser of claim 1 wherein said optical pumping means comprises at least one light emitting diode.
References Cited (Backward Citations)
US4134851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |