Coherent light source and recording/reproducing device using same

A coherent light source (21) for hologram recording/reproduction emits a light having an oscillation wavelength half width satisfying the relationship < /(S2sin) where S is the substantial size of the hologram, is the substantial angle of intersection of the reference light and the signal light,...

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Bibliographische Detailangaben
1. Verfasser:	YAMAMOTO KAZUHISA,KASAZUMI KEN ICHI,SUGITA TOMOYA,MIZUSHIMA TETSURO,KADOWAKI SHIN-ICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY DEVICES USING STIMULATED EMISSION ELECTRICITY ELECTROGRAPHY HOLOGRAPHIC PROCESSES OR APPARATUS HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	A coherent light source (21) for hologram recording/reproduction emits a light having an oscillation wavelength half width satisfying the relationship < /(S2sin) where S is the substantial size of the hologram, is the substantial angle of intersection of the reference light and the signal light, and is the oscillation wavelength. Even if stray light is produced, unwanted interference fringes due to the stray light is prevented, and thus the coherent light source (21) enables stable recording and reproduction of a hologram.