Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1989-04-24
1990-06-19
Bovernick, Rodney B.
Static information storage and retrieval
Magnetic bubbles
Guide structure
350 364, 350446, 365125, G02B 5122, G03H 102
Patent
active
049347799
ABSTRACT:
A low noise system and method for both amplifying and retroreflecting an information-bearing probe beam employs a two-wave mixer in conjunction with a pseudoconjugating element. The probe beam is amplified by two-wave mixing in a photorefractive medium, while the pseudoconjugator is arranged to retroreflect the amplified probe beam back through the photorefractive medium such that optical distortions imposed upon the beam during the amplifying pass are compensated, yielding an output with a high signal-to-noise ratio. Various types of pseudoconjugating elements may be used.
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Ben Loha
Bovernick Rodney B.
Coble P. M.
Denson-Low W. K.
Duraiswamy V. D.
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