Patent US3638138A successfully refreshed from Google Patents.
US3638138A
Expired / Lapsed
US
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Cadmium phosphide laser
Assignee: United States Department of the Navy
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Filing: 1970-06-25
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Granted: 1972-01-25
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Expires: 1990-06-25
Abstract
Abstract A solid-state laser device is provided utilizing cadmium phosphide as the lasing element. At liquid helium temperature it produces coherent laser oscillation having wavelengths near 2.12 micron.
Inventors
- 👤 Stephen G Bishop
- 👤 William J Moore
- 👤 Edward M Swiggard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:58
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
The device as recited in claim 1, wherein said excitation source comprises optical pumping means.
Claim 2
Dependent Claim
17 words
The device as recited in claim 1, including means for cooling said lasing element below ambient temperature.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |