Patent ID: 7065032

Claim:
An optical information recording apparatus for recording information on an optical information recording medium having an information recording layer in which information is recorded through the use of holography, the apparatus comprising: information light generating means for generating information light by spatially modulating a phase of light; recording-specific reference light generating means for generating recording-specific reference light by spatially modulating a phase of light; a recording optical system for irradiating the information recording layer with the information light generated by the information light generating means and the recording-specific reference light generated by the recording-specific reference light generating means so that the information is recorded in the information recording layer in the form of an interference pattern resulting from interference between the information light and the recording-specific reference light; and wherein the information light generating means spatially modulates the phase of the light in accordance with a phase modulation pattern determined based on the information to be recorded and a phase modulation pattern of the recording-specific reference light.