Effects of refractive-index mismatch on three-dimensional optical data-storage density in a two-photon bleaching polymer

Day, Daniel; Gu, Miṅ

doi:10.1364/ao.37.006299

Cited by 83 publications

(58 citation statements)

References 10 publications

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“…Hence, the theoretical maximum storage density for an aberration-free objective with a high NA of 1.4 is only on the order of TB per disc. 8,9 Recent advances in nanophotonics can facilitate either the encoding of information in physical dimensions, such as those defined by the frequency and polarization parameters of the writing beam, or the achievement of three-dimensional (3D) superresolution recording, breaking the conventional storage-capacity limit.…”

Section: Ultrahigh Densitymentioning

confidence: 99%

“…4 As a matter of fact, optical discs have been sparsely used in current approaches to big data storage. Although tremendous research and development efforts have been expended on exploiting the volume of recording media for volumetric or multilayer memories facilitated by nonlinear excitation using a pulsed laser beam, 5-7 the diffractive nature of light restricts the smallest recording bit to approximately half the wavelength of the light, and hence, the theoretical storage capacity in volumetric memories is limited to a few terabytes (TBs) per DVD-sized disc, 8,9 which is still far below the requirements for massive data storage.…”

Section: Introductionmentioning

confidence: 99%

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Optical storage arrays: a perspective for future big data storage

2014

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The advance of nanophotonics has provided a variety of avenues for light-matter interaction at the nanometer scale through the enriched mechanisms for physical and chemical reactions induced by nanometer-confined optical probes in nanocomposite materials. These emerging nanophotonic devices and materials have enabled researchers to develop disruptive methods of tremendously increasing the storage capacity of current optical memory. In this paper, we present a review of the recent advancements in nanophotonics-enabled optical storage techniques. Particularly, we offer our perspective of using them as optical storage arrays for next-generation exabyte data centers.

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Section: Ultrahigh Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical storage arrays: a perspective for future big data storage

2014

Self Cite

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“…Currently, there are several optical storage technologies proposed to tackle the issue. [1][2][3][4][5][6][7][8][9][10] Among those, a spectral encoding technique [5,[8][9][10] is particularly promising for its potential to increase storage capacity by an order of magnitude by introducing a new dimension into the recording. This technique is not limited by the spatial resolution of data bits and can be incorporated into various, currently available optical-storage technologies.…”

Section: Introductionmentioning

confidence: 99%

Spectral encoding on Gold Nanorods Doped in a Silica Sol–Gel Matrix and Its Application to High‐Density Optical Data Storage

Chon

Bullen

Zijlstra

et al. 2007

Adv Funct Materials

142

117

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Metallic nanorods exhibit fascinating optical properties due to surface plasmons—collective oscillation of the electron cloud within a particle. They exhibit two principle absorption bands that correspond to surface plasmon resonance (SPR) along the longitudinal and transverse directions of the nanorod. Most importantly, the longitudinal band can be tuned with the aspect ratio of the rod, making it a spectrally tuneable optical material, which can be applied to a variety of devices from bioimaging to high‐density optical storage. Here, spectral encoding for high‐density optical storage applications is demonstrated on two sizes of gold nanorods (aspect ratios of three and five) doped in a silica sol–gel matrix by femtosecond pulsed laser irradiation. It is widely known that high‐power pulsed laser irradiation causes metal nanorods to undergo shape transformations via the process of melting or fragmentation. The process is enhanced if the laser wavelength is tuned at the longitudinal surface plasmon resonance peak of the nanorods, which results in a significant reduction or shift in the surface plasmon resonance peak. As such a shape change occurs only on the subpopulation of rods that have a longitudinal plasmon band matching the laser wavelength, a size‐ or spectrum‐selective shape transition is possible in a rod mixture with varying aspect ratios. The current spectral encoding technology can be incorporated into existing optical disc technology, such as three‐dimensional bit‐by‐bit and holographic, and can increase the capacity limit by utilizing the spectral domain.

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“…Thus, although sequential compensation of this aberration can be performed during the depth scanning, it is not possible to achieve simultaneously a global correction for the whole scanned sample. This kind of distortions has been the focus of important research efforts in biology, where poorquality images are obtained (Wilson and Carlini 1988;Hell et al 1993;T€ or€ ok et al 1995a, b;Booth and Wilson 2000), in optical data storage systems, where limitations in the voxel size are experienced (Braat 1997;Day and Gu 1998;Stallinga 2005a, b), or in laser trapping technology, where the efficiency of the confinement is compromised (Ke and Gu 1998;Reihani et al 2006).…”

Section: Introductionmentioning

confidence: 99%