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A Review of the Optimisation of Photopolymer Materials for Holographic Data Storage

TLDR
A brief review of the optimisation of photopolymer materials for holographic data storage (HDS) applications is described and the key contributions of each work examined and many of the suggestions made for the improvement of the different photopolymers discussed are presented.
Abstract
Photopolymers are very interesting as optically sensitive recording media due to the fact that they are inexpensive, self-processing materials with the ability to capture low-loss, high-fidelity volume recordings of 3D illuminating patterns. We have prepared this paper in part in order to enable the recognition of outstanding issues, which limit in particular the data storage capacity in holographic data storage media. In an attempt to further develop the data storage capacity and quality of the information stored, that is, the material sensitivity and resolution, a deeper understanding of such materials in order to improve them has become ever more crucial. In this paper a brief review of the optimisation of photopolymer materials for holographic data storage (HDS) applications is described. The key contributions of each work examined and many of the suggestions made for the improvement of the different photopolymer material discussed are presented.

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Journal ArticleDOI

Augmented reality and virtual reality displays: emerging technologies and future perspectives.

TL;DR: In this article, the basic structures of AR and VR headsets and operation principles of various holographic optical elements (HOEs) and lithography-enabled devices are described, with detailed description and analysis of some state-of-the-art architectures.
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Apparatus for eye tracking

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Wearable data display

TL;DR: In this article, the authors provided a transparent wearable data display consisting of a source of collimated light, a means for deflecting said light into a scanned beam, a first array comprising one column and integer N TOWS of switchable grating elements sandwiched between first and second parallel transparent substrates, the substrates together functioning as a first light guide, an second array comprising M columns and N rows of switchables sandwiched by third and fourth, parallel transparent substrate, the substrate acting as a second light guide; and transparent electrodes applied to opposing faces of the first and
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Holographic waveguide eye tracker

TL;DR: In this paper, an eye tracker has a first waveguide for propagating illumination light along a first-waveguide path and propagating image light reflected from at least one surface of an eye along a second waveguide path.
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Contact image sensor using switchable bragg gratings

TL;DR: In this article, the authors provided a contact image sensor consisting of an illumination, a first SBG array device, a transmission grating, a second SGA array device and a waveguiding layer.
References
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Journal ArticleDOI

Coupled wave theory for thick hologram gratings

TL;DR: In this paper, a coupled wave analysis of the Bragg diffraction of light by thick hologram gratings is given, analogous to Phariseau's treatment of acoustic gratings and to the dynamical theory of X-ray diffraction.
Book

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TL;DR: In this paper, the authors present an overview of the properties of polymers and their applications in the literature, including the following: 1.1 Types of Polymers and Polymerization. 2.3 Linear, Branched, and Crosslinked Polymers.
Journal ArticleDOI

Rigorous coupled-wave analysis of planar-grating diffraction

TL;DR: In this article, a rigorous coupled-wave approach is used to analyze diffraction by general planar gratings bounded by two different media, and the analysis is based on a state-variables representation and results in a unifying, easily computer-implementable matrix formulation.
Journal ArticleDOI

Holographic data storage

TL;DR: An overview of the research effort on volume holographic digital data storage is presented, highlighting new insights gained in the design and operation of working storage platforms, novel optical components and techniques, data coding and signal processing algorithms, systems tradeoffs, materials testing and tradeoff, and photon-gated storage materials.
Journal ArticleDOI

Reversible digital and holographic optical storage in polymeric liquid crystals

TL;DR: In this article, a milieu de stockage d'un polyester aromatique contenant des groupes mesogenes de type azobenzene dans la chaine laterale is described.
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