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US3813611A
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Method and device for the realization of a non-linear release of energy in high power lasers
Assignee: ROYAL INST OF Technology
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Filing: 1972-11-03
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Granted: 1974-05-28
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Expires: 1992-11-03
Abstract
Abstract Several embodiments of a device for the non-linear release of energy from a laser cavity of the high power type is described. In each a laser is connected to a release unit which includes a Glan prism, a Kerr-active medium and several retardation elements arranged to achieve the intended purpose.
Inventors
- 👤 L Dahlstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:43
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/115; G; G02; G02F; G02F1/00; G02F1/35; G02F1/3511
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
Apparatus, in combination with a laser which produces light pulses along a path for selectively releasing energy from said laser, said apparatus including: a mirror mounted in said path for reflecting said light pulses back along said path, light polarizing means mounted to intersect said path between said mirror and said laser to operate on said light pulses; and means having a refractive index which is a function of light intensity incident thereon, mounted to intersect said path between said mirror and said laser to operate on said light pulses so that the effect of said light polarizing means upon said light pulses will be a function of light intensity thereby enabling self-release of said light pulses if said light pulses achieve a predetermined intensity.
Claim 2
Dependent Claim
125 words
Apparatus, in combination with a laser which produces light pulses along a path for selectively releasing energy from said laser, said apparatus including: a mirror mounted in said path for reflecting said light pulses back along said path, light polarizing means mounted to intersect said path between said mirror and said laser to operate on said light pulses; and means having a refractive index which is a function of light intensity incident thereon, mounted to intersect said path between said mirror and said laser to operate on said light pulses so that the effect of said light polarizing means upon said light pulses will be a function of light intensity thereby enabling self-release of said light pulses if said light pulses achieve a predetermined intensity.
Claim 3
Dependent Claim
22 words
The apparatus as defined in claim 1 also including: means for varying the Q of said laser as a function of time.
Claim 4
Dependent Claim
17 words
The apparatus as defined in claim 1 in which said light polarizing means include a Glan prism.
Claim 5
Dependent Claim
34 words
Apparatus in accordance with claim 3 in which the mirror is preceded by a retardation element, which together with the mirror comprises a device which is equivalent to one end reflector of the laser.
Claim 6
Dependent Claim
37 words
Device in accordance with claim 4, in which the mirror consists of a (90 - Alpha )* prism, the (90 - Alpha )* edge of which is parallel to the direction of polarization of the Glan prism.
Claim 7
Dependent Claim
39 words
Device in accordance with claim 4 in which the mirror consists of a (90 - Alpha )* prism, the (90 - Alpha )* edge of which forms a 90* angle with the directIon of polarization of the Glan prism.
Claim 8
Dependent Claim
31 words
Apparatus in accordance with claim 3, in which the mirror consists of a 90* prism, the 90* edge of which is parallel to the direction of polarization of the Glan prism.
Claim 9
Dependent Claim
33 words
Apparatus in accordance with claim 3, in which the mirror consists of a 90* prism, the 90* edge of which forms a 90* angle with the direction of polarization of the Glan prism.
References Cited (Backward Citations)
US3407364A
Cited
US3521069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |