Method and apparatus for obtaining modulated light indicative of

Details Method and apparatus for obtaining modulated light indicative of Method and apparatus for obtaining modulated light indicative of

1991-05-03

1993-06-29

Hille, Rolf

Optical: systems and elements

Optical computing without diffraction

Logic gate

359243, 359244, 359248, 359252, 359 11, G02B 523, G02F 101

Patent

active

052239667

ABSTRACT:
An optical logic operation apparatus includes an optical induction refractive index crystal having first and second planes parallel to each other and a device for inputting a coherent probe light from the first plane of the crystal. At least one of the first light output from the first plane of the crystal and the second light output from the second plane of the crystal is taken out so that one of the first and second lights is amplified by the two-wave coupling of the probe light reflected by the second plane and the probe light inputted from the first plane and the other light is attenuated likewise by the two-wave coupling. The inputted image is projected onto the crystal by use of light incoherent to the probe light. With the incidence of the incoherent light, a gain distribution corresponding to the inputted image is generated in the crystal so as to modulate the first and second lights spatially.

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