| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram recording device which increases multiplexity without increase in cross talk, or narrows the movable range of the incident angle of reference light, when it does not increase the multiplexity, to realize the miniaturization of the whole device, and to provide a hologram recording and reproducing device and a hologram recording method. <P>SOLUTION: A recording/reproduction control part 32 controls a shutter 13 and an half-wave plate 15 and has irradiated a multiple number of times, a hologram recording material 26 with a laser beam PL radiated from a laser beam source 11, wherein the laser beam is split by a beam splitter 16. A spatial optical modulator 19 modulates a signal light SL with a pattern which conforms to a signal from a signal light control part 33. The signal light control part 33 sets a pattern to be given to the spatial optical modulator 19, each time signal light and reference light are radiated. A reference light control part 34 controls an angle-rotating mirror 24, each time the irradiation is made, so that the reference light RL and the signal light SL forms a small angle. <P>COPYRIGHT: (C)2010,JPO&INPIT |
