| 摘要 |
An optical information processing apparatus includes: a light source; a reference beam guiding optical system guiding a reproducing reference beam emitted from the light source to an optical information storage medium in which optical information is recorded at multiplexing angles; a signal beam guiding optical system guiding a reproduced signal beam, which is reproduced from the optical information storage medium in the coaxial line with the reproducing reference beam and in the opposite direction of the traveling direction of the reproducing reference beam and is a phase-conjugation wave of a recording signal beam used at the time of recording the optical information; and an optical information detector detecting the reproduced signal beam guided by the signal beam guiding optical system. Accordingly, it is possible to reduce the manufacturing cost, to enhance the multiplexing density of optical information, and to simplify and miniaturize the entire optical information processing apparatus.
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