Title of article :
Microholographic multilayer optical disk data storage
Author/Authors :
McLeod، Robert R. نويسنده , , Daiber، Andrew J. نويسنده , , McDonald، Mark E. نويسنده , , Robertson، Timothy L. نويسنده , , Slagle، Timothy نويسنده , , Sochava، Sergei L. نويسنده , , Hesselink، Lambertus نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
-3196
From page :
3197
To page :
0
Abstract :
Micrometer-sized reflection holograms can be written into a rapidly rotating homogeneous photopolymer disk at the focus of a high-numerical-aperture beam and its retroreflection to implement high-capacity multilayer digital data storage. This retroreflection is generated by an optical system with positive unity magnification to ensure passive alignment of the counterpropagating beam. Analysis reveals that the storage capacity and transfer rate of this bitbased holographic storage system compare favorably with traditional page-based systems but at a fraction of the system complexity and cost. The analysis is experimentally validated at 532 nm by writing and reading 12 layers of microholograms in a 125-(mu)m photopolymer disk continuously rotating at 3600 rpm. The experimental results predict a capacity limit of 140 Gbytes in a millimeter-thick disk or over 1 Tbyte with the wavelength and numerical aperture of Blu-Ray.
Keywords :
confocal microscopy , Holographic , Optical data storage , volume memories , Optical disks , Holography , Multiplex holography , Materials , Polymers , microscopy
Journal title :
Applied Optics
Serial Year :
2005
Journal title :
Applied Optics
Record number :
75891
Link To Document :
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