G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/125 (2006.01) G11B 7/00 (2006.01) G11B 7/0065 (2006.01) G02F 1/11 (2006.01) G02F 1/33 (2006.01)
Patent
CA 2051193
An information recording apparatus includes an acoustooptic deflector, receives a laser beam from a recording light source and an amplitude modulation signal, and diffracts the laser beam in two directions, thereby generating a carrier wave diffracted beam and a lower sideband diffracted beam. The carrier wave diffracted beam is provided with information by a spatial light modulator and modulated, and is incident, as a signal beam, on a moving recording medium. The lower sideband diffracted beam is incident, as a reference beam, on the same incident region as that of the signal beam. The two beams interfere with each other, and multiplexed recording of a hologram is performed on the recording medium.
Tatemichi Hidetoshi
Yamamoto Manabu
Nippon Telegraph And Telephone Corporation
Ridout & Maybee Llp
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