منابع مشابه
High-density optical data storage
Since the introduction of optical data storage systems in the 1970s, we have observed a stepwise increase in their storage capacity using the same means for resolution improvement as in classical microscopy and optical lithography, namely, a reduction in the source wavelength and an increase in the numerical aperture of the imaging optics. In this paper we briefly address the historical develop...
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The ever-increasing demand for high data storage capacity has spurred research on development of innovative technologies and new storage materials. Conventional GByte optical discs (DVDs and Bluray) can be transformed into ultrahigh capacity storage media by encoding multi-level and multiplexed information within the three dimensional volume of a recording medium. However, in most cases the rec...
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We present an overview of our recent research efforts on read–write volume holographic digital data storage. High areal density (394 bits/square micron) holographic data storage, and a novel system architecture for extending this high density to high capacity are described. We also discuss signal–processing of data pages to compensate for pixel shifts, and two–color gated storage media to provi...
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We discuss the usage of the photonic nanojet to detect deeply subwavelength pits in a metal substrate for the purpose of high-density optical data storage. Three-dimensional finite-difference time-domain (FDTD) computational solutions of Maxwell’s equations are used to analyze and design the system. We find that nanojet-illuminated pits having lateral dimensions of only 100 150nm yield a 40-dB ...
متن کاملCoumarin-Containing Polymers for High Density Non-Linear Optical Data Storage.
Optical data storage was performed with various thin polymer films containing coumarin-based derivatives and by using femtosecond laser pulses as well as two-photon absorption processes. Exploring the photodimerization attribute of coumarin derivatives and using appropriate irradiation wavelengths, recording/erasing processes could be carried out in the same area. Second harmonic generation mic...
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ژورنال
عنوان ژورنال: Reports on Progress in Physics
سال: 2006
ISSN: 0034-4885,1361-6633
DOI: 10.1088/0034-4885/69/8/r02