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Holographic photorefractive materials

Other interesting applications for organic photorefractives result from the phase shift between the original optical interference pattern and the holographic refractive index modulation. The phase shift is unique to photorefractive materials and allows... [Pg.3683]

Hessehnk, L., Orlov, S.S., Liu, A., Akella, A., Lande, D., and Neurgaonkar, R.R., Photorefractive materials for nonvolatile volume holographic data storage, Science, 282, 1089, 1998. [Pg.660]

The purpose of this work is to present, in a plain way, the use of a photorefractive crystal as holographic recording material. The hologram consists in the interference between diffraction free beams. The interest in this topic comes from the fact that in the physical optics context, a contemporary topac research consists in the trapping and manipulation of particle conductors or/and dielectrics by means of optical fields also as atom/ ion trapping... [Pg.305]

Optical materials with large nonlinear indices of refraction and fast response times are essential components in any optical data processing scheme. Photorefractive materials have demonstrated the possibility of exhibiting large index changes at modest intensities 1114. In addition. they seem to be ideally suited for real-time holographic applications. These materials exhibit a light-in-... [Pg.736]

Materials. For holographic information storage, materials are required which alter their index of refraction locally by spotwise illumination with light. Suitable are photorefractive inorganic crystals, eg, LiNbO, BaTiO, LiTaO, and Bq2 i02Q. Also suitable are photorefractive ferroelectric polymers like poly(vinyhdene fluoride-i o-trifluorethylene) (PVDF/TFE). Preferably transparent polymers are used which contain approximately 10% of monomeric material (so-called photopolymers, photothermoplasts). These polymers additionally contain different initiators, photoinitiators, and photosensitizers. [Pg.154]

Photorefractive inorganic materials have been studied for some time as holographic media, but advances in photorefractive organic materials are relatively... [Pg.372]


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See also in sourсe #XX -- [ Pg.111 ]




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Photorefraction

Photorefractive

Photorefractive materials

Photorefractivity

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