| 摘要 |
An associative memory system incorporating a hologram, a spatial light modulator (SLM) and thresholding components in a feedback loop to derive an enhanced reference beam for use in reconstructing a stored image. In a preferred embodiment, the SLM includes a liquid crystal light valve (LCLV). A polarizing thresholding analyzer device provides adjustable thresholding. An enhanced thresholded reference beam thereby derived is sent back to the hologram for readout and the stored image is reconstructed at the output plane of the system. In an alternative embodiment, two spatial light modulators and two feedback loops are provided in a resonator configuration.
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