US3578849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm for a laser amplifier chain
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1969-07-10
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Granted: 1971-05-18
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Expires: 1989-07-10
Abstract
Abstract A diaphragm for a laser amplifier chain, comprising an element operable as a transparent divergent lens to an incident laser beam and including an aperture disposed centrally of the lens and of a size to permit a substantially part of a laser beam to pass from a driver laser to a laser amplifier. The element has a planar face on the side of the driver laser and a concave recess surrounding the aperture on its other side.
Inventors
- 👤 Hubert Guillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:10
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/23; H01S3/2308; H01S3/2316; G; G02; G02B; G02B5/00; G02B5/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A laser amplifier chain comprising a driver laser having a rod emitting a cylindrical beam, a laser amplifier with a rod receiving said beam through an input base thereof, said laser amplifier rod having its longitudinal axis coincident with the axis of said beam, said input face being oblique with respect to said longitudinal axis, a transparent divergent lens mounted between said driving laser and said laser amplifier transversely to said beam, said lens having planar face towards said driver laser and oblique with respect to said longitudinal axis and a concave face toward said laser amplifier, said lens having an aperture centered on said longitudinal axis, said aperture being substantially identical to the cross section of the rod of said laser amplifier through a plane at right angles to said longitudinal axis.
Claim 2
Dependent Claim
133 words
A laser amplifier chain comprising a driver laser having a rod emitting a cylindrical beam, a laser amplifier with a rod receiving said beam through an input base thereof, said laser amplifier rod having its longitudinal axis coincident with the axis of said beam, said input face being oblique with respect to said longitudinal axis, a transparent divergent lens mounted between said driving laser and said laser amplifier transversely to said beam, said lens having planar face towards said driver laser and oblique with respect to said longitudinal axis and a concave face toward said laser amplifier, said lens having an aperture centered on said longitudinal axis, said aperture being substantially identical to the cross section of the rod of said laser amplifier through a plane at right angles to said longitudinal axis.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |