Patent US4024466A successfully refreshed from Google Patents.
US4024466A
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US
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Laser containing a laser resonator
Assignee: Rheinmetall Air Defence AG
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Filing: 1975-08-18
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Granted: 1977-05-17
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Expires: 1995-08-18
Abstract
Abstract A laser containing a laser resonator possessing a laser rod and an electro-optical modulation device between two mirrors. The modulation device comprises a polarization element and a component embodying an electro-optical crystal at the opposite faces of which there are arranged electrodes. Both faces of the crystal and a polarization prism of the polarization element possess a degree of planeness less than one-tenth of the wavelength of the laser light and with respect to one another a plane-parallelism of less than five arc seconds for increasing the stored energy in the laser resonator and the power output.
Inventors
- 👤 Gregor Cremosnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:50
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/106; H01S3/107
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
145 words
A laser arrangement containing a laser resonator comprising: a. two mirrors; b. a laser rod; and c. an electro-optical modulation device between said two mirrors; d. said modulation device comprising: i. a polarization element and ii. a component possessing an electro-optical crystal between one of said two mirrors and said polarization element; e. said electro-optical crystal having oppositely situated partially reflecting surfaces at which there are arranged electrodes; said polarization element possessing oppositely situated partially reflecting surfaces f. both of the oppositely situated partially reflecting surfaces of the electro-optical crystal and of the polarization element possessing: i. a degree of planeness less than one-tenth of the wavelength of the laser light and ii. a plane parallelism of less than five arc seconds with respect to each other and to the resonator mirrors for increasing the stored energy in the laser resonator and the power output.
Claim 2
Dependent Claim
145 words
A laser arrangement containing a laser resonator comprising: a. two mirrors; b. a laser rod; and c. an electro-optical modulation device between said two mirrors; d. said modulation device comprising: i. a polarization element and ii. a component possessing an electro-optical crystal between one of said two mirrors and said polarization element; e. said electro-optical crystal having oppositely situated partially reflecting surfaces at which there are arranged electrodes; said polarization element possessing oppositely situated partially reflecting surfaces f. both of the oppositely situated partially reflecting surfaces of the electro-optical crystal and of the polarization element possessing: i. a degree of planeness less than one-tenth of the wavelength of the laser light and ii. a plane parallelism of less than five arc seconds with respect to each other and to the resonator mirrors for increasing the stored energy in the laser resonator and the power output.
Claim 3
Dependent Claim
16 words
The laser arrangement as defined in claim 1, wherein the polarization element comprises a polarization prism.
Claim 4
Dependent Claim
49 words
The laser arrangement as defined in claim 2, wherein each mirror has a reflecting surface, both the oppositely situated faces of the crystal and the polarization prism possess a plane-paralelism of less than 5 arc seconds with respect to the reflecting surfaces of the mirrors of the laser resonator.
Claim 5
Dependent Claim
27 words
The laser arrangement as defined in claim 1, wherein all said faces possess a plane parallelism with respect to one another of less than 5 arc seconds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |