HOLOGRAM RECORDING/REPRODUCING METHOD AND HOLOGRAM RECORDING/REPRODUCING DEVICE

摘要

A hologram recording/reproducing method comprising the recording step of generating a signal light beam by spatially modulating a coherent reference light beam according to recorded information, irradiating a recording material of a photosensitive material with the above signal light to allow it to enter and pass through the recording medium, and forming a diffraction grating region by a light interference pattern in a portion inside the recording medium where a 0-order light and a diffraction light of the signal light beam interfere, and the reproducing step of applying the reference light beam to the above diffraction grating region to produce a reproduction wave corresponding to the signal light beam.