Patent US4589118A successfully refreshed from Google Patents.
US4589118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of optical pumping of erbium-doped laser material and apparatus therefor
Assignee: Hoya Corp
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Filing: 1985-03-08
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Granted: 1986-05-13
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Expires: 2005-03-08
Abstract
Abstract A method of optical pumping of an erbium laser and an apparatus therefor with an erbium laser medium, a light source for side-pumping the erbium laser medium, a neodymium laser medium for emitting a laser beam upon optical pumping by the light source, and an optical system for directing the laser beam from the neodymium laser medium to the erbium laser medium for side-pumping the erbium laser medium. Thus the erbium laser medium is side-pumped by the light source and also end-pumped by the laser beam emitted from the neodymium laser medium side-pumped at the same time by the light source in the same lamp house. Therefore the erbium laser can be optically pumped with high efficiency and offer a low threshold value.
Inventors
- 👤 Teiichi Suzuki
- 👤 Tetsuro Izumitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:34
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/091; H01S3/094; H01S3/0915; H01S3/092; H01S3/14; H01S3/16; H01S3/1601; H01S3/1603; H01S3/1608
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A method of optical pumping of an erbium laser medium which comprises side-pumping an erbium laser medium by means of excitation by a light source while at the same time end-pumping the erbium laser medium with a laser beam from a neodymium laser medium, said laser beam being emitted by optical pumping of the neodymium laser medium with said light source.
Claim 2
Independent Claim
61 words
A method of optical pumping of an erbium laser medium which comprises side-pumping an erbium laser medium by means of excitation by a light source while at the same time end-pumping the erbium laser medium with a laser beam from a neodymium laser medium, said laser beam being emitted by optical pumping of the neodymium laser medium with said light source.
Claim 3
Dependent Claim
18 words
The method as claimed in claim 1, wherein the erbium laser medium contains ytterbium ions as a sensitizer.
Claim 4
Independent Claim
90 words
An apparatus for optical pumping of an erbium laser material which comprises: a housing; an erbium laser medium mounted inside said housing; a neodymium laser medium mounted inside said housing; a light source means mounted inside said housing for excitation of said erbium laser medium to side-pump the erbium laser medium and for optical pumping of said neodymium laser medium to emit a laser beam; and an optical means for directing the laser beam from the neodymium laser medium to said erbium laser medium to end-pump the erbium laser medium.
Claim 5
Independent Claim
90 words
An apparatus for optical pumping of an erbium laser material which comprises: a housing; an erbium laser medium mounted inside said housing; a neodymium laser medium mounted inside said housing; a light source means mounted inside said housing for excitation of said erbium laser medium to side-pump the erbium laser medium and for optical pumping of said neodymium laser medium to emit a laser beam; and an optical means for directing the laser beam from the neodymium laser medium to said erbium laser medium to end-pump the erbium laser medium.
Claim 6
Dependent Claim
18 words
The apparatus as claimed in claim 3, wherein the erbium laser medium contains ytterbium ions as a sensitizer.
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) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |