Three-dimensional optical storage by use of an ultrafast laser

Sumei M. Huang; Ming Hui Hong; Ding Jiang Wu; L. H. Van; T. S. Ong; Boris S. Luk'yanchuk; Tow Chong Chong

doi:10.1117/12.533067

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16 September 2003 Three-dimensional optical storage by use of an ultrafast laser

Sumei M. Huang, Ming Hui Hong, Ding Jiang Wu, L. H. Van, T. S. Ong, Boris S. Luk'yanchuk, Tow Chong Chong

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Proceedings Volume 5069, Optical Data Storage 2003; (2003) https://doi.org/10.1117/12.533067
Event: Optical Data Storage 2003, 2003, Vancouver, Canada

Abstract

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.

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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); https://doi.org/10.1117/12.533067

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