HOLOGRAM RECORDING DEVICE AND HOLOGRAM DISPLAY

摘要

PURPOSE: A hologram recording device and a hologram playing device are provided to record an overlap pattern expressed by complex amplitude in a photorefractive material through optical Fast Fourier Transform without an information loss. CONSTITUTION: A beam dividing unit(210) divides a beam emitted from a light source into an object beam and a reference beam. An optical phase amplitude space modulation optics unit(230) modulates phase of the object beam according to phase information. A photorefractive material(240) stores the beam emitted from the optical phase amplitude space modulation optics unit and an interference pattern of the reference beam. The optical phase amplitude space modulation optics unit includes an optical phase amplitude space modulation unit modulating phase and amplitude of the object beam and lens performing optical Fast Fourier Transform of the modulated object beam. [Reference numerals] (200) Optics; (210) Beam dividing unit; (220) Mirror; (230) Optical phase amplitude space modulation optics unit; (240) Photorefractive material; (250) Stage