Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1986-09-11
1989-05-16
Moskowitz, Nelson
Amplifiers
Parametric amplifiers
Semiconductor type
307425, 372 21, 372 33, 372 99, H01S 300, H01S 3098, G01S 742
Patent
active
048313335
ABSTRACT:
A device for steering a wavefront of electromagnetic radiation comprising a pumping means for coherently pumping a plurality of phase conjugate mirrors with a monochromatic coherent beam having a wavelength substantially the same as the wavelength of the wavefront. The device further comprises an array of phase conjugate mirrors wherein the acceptance of each phase conjugate mirror, for conjugate reflection of the wavefront, is pointing in substantially the same direction, and the phase conjugate mirrors are composed of material responsive to the beam wavelength. The device further comprises a Fourier transform lens, a control reflector positioned such that the reflected beam from the reflector back to the lens is within the acceptance angle of the ray, and a beam splitter positioned between the array and the control reflector for extracting a steered beam. Each phase conjugate mirror may provide amplification of the wavefront, or amplifying lasers may be used. The phase conjugate mirrors may be positioned close to each other, or telescopes may be used in conjunction with each phase conjugate mirror to expand each beam.
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LTV Aerospace & Defense Co.
Moskowitz Nelson
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