Abstract text

A recording and reproducing device performs recording and reproduction on a hologram recording medium on which data is recorded by the use of interference fringes formed by signal light and reference light. The device includes: a light generation device including a spatial light modulator which performs spatial light modulation on incident light, and generating the signal and reference lights in the recording and the reference light in the reproduction; an image sensor for receiving the incident light and obtaining a light reception signal; an optical system for guiding the signal and reference lights to the hologram recording medium and reproduction light to the image sensor; and a band limiting device inserted on a Fourier plane in an optical path of the optical system, and having a transmittance set to be lower in a central area thereof than in a peripheral area thereof, to perform band limitation on the incident light.