Open AccessWavelength-multiplexed submicron holograms for disk-compatible data storage
Author(s) -
Pengfei Wu,
Zhiqiang Liu,
Jame J. Yang,
Angel Flores,
Michael R. Wang
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.017798
Subject(s) - optics , achromatic lens , holography , holographic data storage , multiplexing , wavelength , optical storage , diffraction efficiency , 3d optical data storage , computer data storage , materials science , diffraction , optoelectronics , physics , computer science , computer hardware , telecommunications
By using a hybrid diffractive and refractive achromat with extended depth of focus, we have successfully recorded a micro-hologram array with diffraction-limited individual spot size maintained throughout the thickness of recording medium. An electrically programmable wavelength combiner was constructed in which a white light source was adopted. By modifying on a commercial CD readout head, we configured a compact micro-hologram recording/readout system that is compatible to existing disk storage technology. Base on the wavelength combiner and recording/readout system, wavelength-multiplexed micro-holograms were recorded and recovered. The presented results demonstrate the practicality of our novel storage architecture.