US3727150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ytterbium glass laser with an output in the 1,024 nanometers range
Assignee: American Optical Corp
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Filing: 1971-10-22
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Granted: 1973-04-10
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Expires: 1991-10-22
Abstract
Abstract A laser device containing an optically resonant laser cavity which is reflective for a light with an optical center between the 1,020-1,032 nanometer range and an ytterbium doped glass host, the composition of which is selected so that the host is capable of exhibiting fluorescence peaked between the 1,020-1,032 nanometer range of the spectrum. The glass composition is a silicate glass which includes a monovalent alkali metal oxide selected from a member of the group consisting of rubidium, cesium, potassium and mixtures thereof. The foregoing monovalent alkali metal oxides have been found to increase the fluorescent peaks of ytterbium doped glasses between 1,020-1,032 nanometers, making laser action at this wavelength possible.
Inventors
- 👤 C Robinson
- 👤 R Shaw
- 👤 J Fournier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:03
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/0071; C03C3/00; C03C3/04; C03C3/076; C03C3/095; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The laser device as set forth in claim 1 wherein the ytterbium oxide content is between the range of 0.3-8 weight per cent.
Claim 2
Dependent Claim
23 words
The laser device as set forth in claim 2 wherein said host includes neodymium oxide within the range of 0.1-3 weight per cent.
Claim 3
Dependent Claim
42 words
The device as set forth in claim 3 wherein said optically resonant laser cavity means is formed by dichroic reflectors which are more reflective for light having an optical center at 1,024 nanometers than light having an optical center at 1,060 nanometers.
Claim 4
Dependent Claim
18 words
The device as set forth in claim 4 wherein said monovalent alkali metal oxide content is cesium oxide.
Claim 5
Dependent Claim
18 words
The device as set forth in claim 4 wherein said monovalent alkali metal oxide content is rubidium oxide.
Claim 6
Dependent Claim
141 words
A laser device for producing laser energy in wavebands with an optical center between the range of 1,020-1,030 nanometers comprising an active laser element which fluoresces between the 1,020-1,030 nanometer range of the spectrum, means for pumping said active laser element to produce a population inversion in said element and emission of radiation therefrom in said range and optical resonant laser cavity means which is reflective for light in said range, positioned about said active laser element for stimulating and resonating said radiation, said active laser element consists essentially of the following constituents in the following range in per cent by weight: Constituent Range in % by Weight SiO2 30-79 Monovalent metal oxide selected from the group consisting of K2O, Rb2O and Cs2O 20-60 Divalent metal oxide 0-15 Al1O3 0-5 La2O3 0-5 B2O3 0-2 Fining agent 0-2 Nd2O3 0.1-3 Yb2O3 0.3-8
Claim 7
Dependent Claim
42 words
The device as set forth in claim 7 wherein said optically resonant laser cavity means is formed by dichroic reflectors which are more reflective for light having an optical center at 1,024 nanometers than light having an optical center at 1,060 nanometers.
Claim 8
Dependent Claim
16 words
The device as set forth in claim 8 wherein said monovalent metal oxide is rubidium oxide.
Claim 9
Dependent Claim
16 words
The device as set forth in claim 8 wherein said monovalent metal oxide is cesium oxide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |