Coherent light generators – Particular beam control device – Scanning
Patent
1995-01-13
1997-02-04
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Scanning
372108, 372101, 372 98, 372 26, 372100, H01S 310
Patent
active
056006667
ABSTRACT:
A laser beam source radiates out laser beams such that they may intersect one another with predetermined angular spectra on a predetermined virtual plane. A Fourier transform lens array optical system, which is located in the vicinity of the virtual plane, divides the laser beams having impinged upon the virtual plane into small regions and carries out Fourier transform of the small regions. Phase modulators modulate the phases of the laser beams divided into the small regions such that the wave fronts of the laser beams after being subjected to the Fourier transform may have the same phase with respect to a predetermined direction as a whole. A scanning drive device drives the phase modulators such that the directions of travel of the laser beams radiated out of the Fourier transform lens array optical system may be changed. A first resonator mirror is located at a position that receives the scanned laser beams. A second resonator mirror is located at a position rearward from the laser beam source.
REFERENCES:
patent: 3992681 (1976-11-01), Haun, Jr. et al.
Optics Letter--"Diode-pumped Microchip Lasers Electro-optically Q Switched At High Pulse Repetition Rates", vol. 17, No. 17, Oct. 1992, New York, J. J. Zayhowski et al.
"Solid-State Laser Engineering"--`Q-Switches and External Switching Devices`, W. Koechner, pp. 402-448.
Cleo Conference--"Diode-pumped Electro-optically Q-Switched Mircochip Lasers", May 1992, J. J. Zayhowski et al.
Exhibit A--Text filed at USPTO corresponding to FR 93 13564.
Exhibit B--U.S. Serial No. 08/227,283, filed Apr. 13, 1994, corresponding to FR 93 04375.
Fuji Photo Film Co. , Ltd.
Jr. Leon Scott
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