Abstract
We describe the use of two-photon absorption in a photorefractive crystal for recording bit data in multilayered optical memory. A short-pulse near-infrared laser is used for generating the photorefractive effect by two-photon absorption. We succeeded in recording and reading seven layers of data in a crystal with a lateral resolution (distance between bits) of and an axial resolution (distance between layers) of .
© 1998 Optical Society of America
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