Multilayered optical data storage using a spatial soliton

Hisaka, Masaki; Yoshida, Kakunoshin

doi:10.1063/1.3050454

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…Pattern formation therein is relevant both from the basic science viewpoint and from the applied science one, because of their potential applicability in information storage and processing [49][50][51][52][53]. Here, we investigate pattern formation in two-level lasers submitted to temporal rocking.…”

Section: Pattern Formation Via Rocking In Two-level Lasersmentioning

confidence: 99%

Phase-bistable pattern formation in oscillatory systems via rocking: application to nonlinear optical systems

Valcárcel

Martínez-Quesada

Staliūnas

2014

Phil. Trans. R. Soc. A.

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We present a review, together with new results, of a universal forcing of oscillatory systems, termed ‘rocking’, which leads to the emergence of a phase bistability and to the kind of pattern formation associated with it, characterized by the presence of phase domains, phase spatial solitons and phase-bistable extended patterns. The effects of rocking are thus similar to those observed in the classic 2 : 1 resonance (the parametric resonance) of spatially extended systems of oscillators, which occurs under a spatially uniform, time-periodic forcing at twice the oscillations' frequency. The rocking, however, has a frequency close to that of the oscillations (it is a 1 : 1 resonant forcing) and hence is a good alternative to the parametric forcing when the latter is inefficient (e.g. in optics). The key ingredient is that the rocking amplitude is modulated either in time or in space, such that its sign alternates (exhibits π -phase jumps). We present new results concerning a paradigmatic nonlinear optical system (the two-level laser) and show that phase domains and dark-ring (phase) solitons replace the ubiquitous vortices that characterize the emission of free-running, broad area lasers.

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Section: Pattern Formation Via Rocking In Two-level Lasersmentioning

confidence: 99%

Phase-bistable pattern formation in oscillatory systems via rocking: application to nonlinear optical systems

Valcárcel

Martínez-Quesada

Staliūnas

2014

Phil. Trans. R. Soc. A.

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“…To address these limitations, multilayered optical data storage using a pair of pulse-shaped spatial solitons to enable large-capacity storage into volume materials has been proposed and studied for fundamental research. 7) In this method, the spatial soliton propagates into the recording medium with a constant beam width which enables high-density lateral recording in deep layers. Ultrashort pulsed lasers can also be used to reduce the bit size and increase the number of recording layers.…”

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confidence: 99%

Coaxial random-access reading in multilayered optical data storage systems using a pair of counter-propagating pulse-shaped spatial solitons

Hisaka¹

2017

Jpn. J. Appl. Phys.

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Coaxial random-access reading in multilayered optical data storage using a pair of counter-propagating pulse-shaped spatial solitons was experimentally investigated. Counter-propagating second-harmonic spatial solitons, which are formed by focusing titanium sapphire pulsed lasers, induced nonlinear collision and determined the depth readout address in a strontium barium niobate crystal. The nonlinear interaction between the collision and the locally-reversed crystal domains, which represents single-bit data, changed the spectrum and intensity of the transmitted second-harmonic beam. Coaxial random-access reading associated with the spatial soliton of the multilayered bit datum was demonstrated by scanning collision points along the direction of the depth.

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“…ince Segev et al's first theoretical prediction in 1992 1) and followed by Duree et al's experimental observation in 1993, 2) photorefractive spatial solitons have attracted considerable attention due to their robustness for all-optical switching and laser beam manipulation. [3][4][5][6][7][8][9][10][11] So far, several types of photorefractive spatial soliton have been observed, namely, quasi-steady-state spatial solitons, screening spatial solitons, and photovoltaic spatial solitons. [12][13][14][15] The formation of photorefractive spatial solitons results from the photorefractive effect, while the nonlinearity of the photorefractive medium can completely compensate for light diffraction and so trap the laser beam.…”

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confidence: 99%

Energy Transfer through Photorefractive Spatial Soliton Interaction

Liang

Guo

Jiang

et al. 2013

Appl. Phys. Express

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In this research, we investigate the interaction between colliding photorefractive spatial solitons. The energy transfer from a vector soliton to a scalar soliton is quantitatively investigated. The energy exchange efficiency increases as the input intensity ratio of the vector soliton increases, while it decreases as the collision angle increases. It is also found that the spatial solitons interact with each other like particles, and the energy of each soliton is conserved after the collision. This observation provides preliminary data for optical computation applications via photorefractive spatial solitons.

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Multilayered optical data storage using a spatial soliton

Cited by 5 publications

References 14 publications

Phase-bistable pattern formation in oscillatory systems via rocking: application to nonlinear optical systems

Phase-bistable pattern formation in oscillatory systems via rocking: application to nonlinear optical systems

Coaxial random-access reading in multilayered optical data storage systems using a pair of counter-propagating pulse-shaped spatial solitons

Energy Transfer through Photorefractive Spatial Soliton Interaction

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