Wavelength-multiplexed submicron holograms for disk-compatible data storage.
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.
Wu
Pengfei
P
New Span Opto-Technology Inc., 16115 S.W. 117th Ave. Ste A-15, Miami, Florida 33177, USA.
Liu
Zhiqiang
Z
Yang
Jame J
JJ
Flores
Angel
A
Wang
Michael R
MR
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006696:Holography / Q000295:instrumentation*; D016247:Information Storage and Retrieval; D016249:Optical Storage Devices; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity