US3928811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser amplifier
Assignee: Quentron Optics Pty Ltd
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Filing: 1974-02-06
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Granted: 1975-12-23
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Expires: 1994-02-06
Abstract
Abstract A laser amplifier structure with the amplifying medium in the form of one or more, appropriately excited, orientated and fashioned, elongated slab segments. The laser radiation enters and leaves each of the slab segments via respective, adjacent polished faces which are parallel to the longest axis of each slab. A single laser beam or a sequence of laser beams equivalent to such a beam can be amplified.
Inventors
- 👤 John Leonard Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:14
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/23; H01S3/2308; H01S3/2316; H01S3/05; H01S3/06; H01S3/0602; H01S3/0606
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
65 words
An elongated rectangular slab-shaped laser amplifier device having one pair of opposite side surfaces which are optically polished, said optically polished side surfaces being parallel to the longitudinal axis of the slab, with all other surfaces being optically unpolished, and means for introducing excitation radiation through said unpolished side surfaces with said device adapted to eliminate laser radiation and excitation through said unpolished end surfaces.
Claim 2
Dependent Claim
65 words
An elongated rectangular slab-shaped laser amplifier device having one pair of opposite side surfaces which are optically polished, said optically polished side surfaces being parallel to the longitudinal axis of the slab, with all other surfaces being optically unpolished, and means for introducing excitation radiation through said unpolished side surfaces with said device adapted to eliminate laser radiation and excitation through said unpolished end surfaces.
Claim 3
Dependent Claim
26 words
A laser medium amplifying device as claimed in claim 1 particularly adapted to amplify a sequence of non-overlapping laser beams having circular or near circular cross-section.
Claim 4
Dependent Claim
45 words
A laser medium amplifying device as claimed in claim 1 wherein the dimensions of length, width and thickness of the individual slab segments are varied in such a manner as to accommodate the amplification of a divergent laser beam, or sequence of such laser beams.
Claim 5
Dependent Claim
52 words
A laser medium amplifying device as claimed in claim 1 comprising means for passing a a plurality of non-overlapping laser beams each of circular or near circular cross section into the device with a time sequence between the beams appropriate to the realization of a travelling wave output with a time gradient.
Claim 6
Dependent Claim
19 words
A laser medium amplifying device as claimed in claim 1 wherein the medium is composed of neodymium doped glass.
Claim 7
Dependent Claim
15 words
A laser medium amplifying device as claimed in claim 1 wherein the medium is ruby.
Claim 8
Dependent Claim
20 words
A laser medium amplifying device as claimed in claim 1 wherein the laser medium is neodumium doped yttrium aluminium garnet.
Claim 9
Dependent Claim
25 words
A gaseous laser medium amplifying device as claimed in claim 1 wherein the said elongated slab comprises a container holding iodine as the laser medium.
References Cited (Backward Citations)
US3423697A
Cited
US3423696A
Cited
US3500231A
Cited
US3631362A
Cited
US3621456A
Cited
US3794929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |