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16 September 2003 Three-dimensional optical storage by use of an ultrafast laser
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Proceedings Volume 5069, Optical Data Storage 2003; (2003)
Event: Optical Data Storage 2003, 2003, Vancouver, Canada
The feasibility of multilayered optical data storage is examined in glass, quartz, polycarbonate and a rhodamine B and Au (III) doped PMMA medium by using a focused 800 nm, 100-fs pulsed laser. Refractive-index or fluorescent data patterns are recorded by use of an objective to focus laser pulses inside these transparent medium. The laser pulse produces a submicrometer-diameter structurally altered region in the material. For glass, quartz and polycarbonate materials, we record binary information by writing such bits in multiple planes and read it out with a microscope. We demonstrate data storage and retrieval with 0.6-μm in-plane bit spacing and 10-μm interplane spacing (100 Gbits/cm3). Scanning electron microscopy (SEM) are used to characterize structural changes in these materials. For the rhodamine B and Au (III) doped PMMA medium, fluorescent spectra are measured before and after laser treatment. Writing three-dimensional data bit inside the transparent medium based on a multi-photon absorption process is expected to become a useful method used to fabricate optical memory with both an ultra-high storage density and an ultra-high storage density and an ultra-high recording speed.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sumei M. Huang, Ming Hui Hong, Ding Jiang Wu, L. H. Van, T. S. Ong, Boris S. Luk'yanchuk, and Tow Chong Chong "Three-dimensional optical storage by use of an ultrafast laser", Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003);

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