Patent US4123150A successfully refreshed from Google Patents.
US4123150A
Expired / Lapsed
US
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Stable resonators for radial flow lasers
Assignee: RTX Corp
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Filing: 1977-04-21
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Granted: 1978-10-31
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Expires: 1997-04-21
Abstract
Abstract A stable resonator is disclosed capable of providing a laser beam having both high power and good optical quality from a large volume gain medium. The stable resonator is formed having an optical cavity defined at one end by an unstable resonator and at the other end by a reflector in optical communication with the unstable resonator.
Inventors
- 👤 Edward A. Sziklas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:00
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/081; H01S3/0818
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
66 words
A stable resonator comprising: an optical cavity, an unstable resonator defining one end of the optical cavity, and reflector means, in optical communication with the unstable resonator, defining the other end of the optical cavity wherein the reflector means is adapted for cooperating with the unstable resonator to form a stable resonator whereby radiation passing from the unstable resonator is reflected back into the unstable resonator.
Claim 2
Dependent Claim
66 words
A stable resonator comprising: an optical cavity, an unstable resonator defining one end of the optical cavity, and reflector means, in optical communication with the unstable resonator, defining the other end of the optical cavity wherein the reflector means is adapted for cooperating with the unstable resonator to form a stable resonator whereby radiation passing from the unstable resonator is reflected back into the unstable resonator.
Claim 3
Dependent Claim
18 words
The invention according to claim 1 wherein the reflector means is a mirror having a flat reflective surface.
Claim 4
Dependent Claim
21 words
The invention according to claim 1 wherein the reflector means is a mirror having a reflective surface which forms an annulus.
Claim 5
Dependent Claim
23 words
The invention according to claim 1 wherein the unstable resonator and the reflector means are positioned on and symmetrically about a centerline axis.
Claim 6
Dependent Claim
36 words
The invention according to claim 1 wherein the unstable resonator comprises: a concave mirror having a first reflective surface, and a convex mirror having a second reflective surface in optical communications with the first reflective surface.
Claim 7
Dependent Claim
15 words
The invention according to claim 1 wherein the reflector means is a second unstable resonator.
Claim 8
Dependent Claim
39 words
The invention according to claim 6 wherein the second unstable resonator comprises: a second convex mirror having a third reflective surface, and a second concave mirror having a fourth reflective surface in optical communication with the third reflective surface.
Claim 9
Dependent Claim
80 words
A stable resonator having a centerline axis comprising: an optical cavity, an unstable resonator defining one end of the optical cavity, reflector means, in optical communication with the unstable resonator, defining the other end of the optical cavity wherein the reflector means is adapted for cooperating with the unstable resonator to form a stable resonator whereby radiation passing from the unstable resonator is reflected back into the unstable resonator, and means for coupling a laser beam from the stable resonator.
Claim 10
Dependent Claim
80 words
A stable resonator having a centerline axis comprising: an optical cavity, an unstable resonator defining one end of the optical cavity, reflector means, in optical communication with the unstable resonator, defining the other end of the optical cavity wherein the reflector means is adapted for cooperating with the unstable resonator to form a stable resonator whereby radiation passing from the unstable resonator is reflected back into the unstable resonator, and means for coupling a laser beam from the stable resonator.
Claim 11
Dependent Claim
36 words
The invention according to claim 8 wherein the unstable resonator comprises: a concave mirror having a first reflective surface, and a convex mirror having a second reflective surface in optical communication with the first reflective surface.
Claim 12
Dependent Claim
20 words
The invention according to claim 8 including a gain medium disposed in the optical cavity symmetrically about the centerline axis.
Claim 13
Dependent Claim
14 words
The invention according to claim 8 wherein the gain medium has an annular configuration.
Claim 14
Dependent Claim
30 words
The invention in accordance with claim 11 wherein the gain medium is disposed within the optical cavity symmetrically about the centerline axis between the unstable resonator and the reflector means.
References Cited (Backward Citations)
US3919664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |