Fourier Transform Optical Imaging Using SAW Memory-Correlator

Abstract
A novel optical imaging method by using a memory-correlator in which a laser pulse acts to store wideband surface wave signals in surface states of a semiconductor is described. The Fourier transform technique is used to scan optical images by storing a chirp surface wave signal and an optical pattern simultaneously, which can improve a dynamic range and a signal-to-noise ratio in comparison with a single scan pulse method.

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