Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1988-09-19
1991-06-04
Moskowitz, Nelson
Amplifiers
Parametric amplifiers
Semiconductor type
372 66, 372 93, H01S 3091, H01S 304
Patent
active
050217429
ABSTRACT:
This invention relates to a laser amplifier which achieves substantially enhanced gains by diverging the laser beam in a gain medium having a substantially rectangular shape. In particular, at least one laser beam is passed through a lens or other suitable means to cause it to diverge at a predetermined angle and the diverging beam or beams are caused to pass through the gain medium in a manner such that a beam makes only a single pass through any section of the medium, with the total number of passes through the medium by the beam(s) applied to the medium being an even number. The angle at which the beam diverges should be such as to maintain a near optimum laser power extraction efficiency for the beam. If a single beam is supplied to the medium, it makes an even number of passes through the medium with mirrors, prisms, or other suitable means being provided as the beam exits the medium after each pass except the last pass to fold the beam back into the medium for a subsequent pass. The invention operates in a similar manner where two or more laser beams are applied to the medium.
REFERENCES:
patent: 3467906 (1968-09-01), Cornely et al.
patent: 3513402 (1976-05-01), Marrison
patent: 3577093 (1971-05-01), Simpson
patent: 3628179 (1971-12-01), Cuff
patent: 4001705 (1977-01-01), Sinclair et al.
patent: 4103179 (1978-07-01), Schmidt
patent: 4498051 (1985-02-01), Hunter et al.
patent: 4553244 (1985-11-01), Benedict et al.
Jacob, J. H., "Expanding Beam Concept . . . Laser Amplifiers"; Appl. Phys. Lett., vol. 48, No. 5, pp. 318-320, 2/3/86; abst.
Elov et al.; "Divergence of Radiation . . . Rectilinear Contours", 7/84, Sov. J. Quantum Electron, vol. 14, #7, pp. 769-772,; abst.
Moskowitz Nelson
Science Research Laboratory, Inc.
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