USE OF 2-PHOTON ABSORPTION IN A PHOTOREFRACTIVE CRYSTAL FOR 3-DIMENSIONAL OPTICAL MEMORY

Authors
KAWATA Y ISHITOBI H KAWATA S
Citation
Y. Kawata et al., USE OF 2-PHOTON ABSORPTION IN A PHOTOREFRACTIVE CRYSTAL FOR 3-DIMENSIONAL OPTICAL MEMORY, Optics letters, 23(10), 1998, pp. 756-758
Citations number
9
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
23
Issue
10
Year of publication
1998
Pages
756 - 758
Database
ISI
SICI code
0146-9592(1998)23:10<756:UO2AIA>2.0.ZU;2-W
Abstract
We describe the use of two-photon absorption in a photorefractive crys tal for recording bit data in multilayered optical memory. A short-pul se near-infrared laser is used for generating the photorefractive effe ct by two-photon absorption. We succeeded in recording and reading sev en layers of data in a LiNbO3 crystal with a lateral resolution (dista nce between bits) of 5 mu m and an axial resolution (distance between layers) of 20 mu m. (C) 1998 Optical Society of America.