2006
DOI: 10.1016/j.crhy.2006.07.016
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Review of photorefractive materials: an application to laser beam cleanup

Abstract: Nonlinear photorefractive materials are well suited to record dynamic volume holograms using the wave mixing of coherent laser beams. The photo-induced index modulation is due to a space charge field which modulates the crystal refractive index. The basic phenomena and beam interactions are reviewed for different types of materials operating in the visible and near infrared. In particular, we outline their ability to amplify a low intensity signal beam due to the intensity transfer of a spatially multimode pum… Show more

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Cited by 7 publications
(2 citation statements)
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“…The n value change (Δ n 0.5) is over one order of magnitude higher than that of other photorefractive materials. [ 88 ] The initial graphene metamaterial shows a low k and its k value changes by 0.25 as the power is about 10 µW, offering a method to achieve effective amplitude modulation. In addition, laser tuning is able to provide localized material change with a high resolution in the nanometer range, which can be further controlled by the numerical aperture of the focusing objective, the wavelength of the laser beam and the laser power.…”
Section: Structure and Optical Property Of Graphene Metamaterialsmentioning
confidence: 99%
“…The n value change (Δ n 0.5) is over one order of magnitude higher than that of other photorefractive materials. [ 88 ] The initial graphene metamaterial shows a low k and its k value changes by 0.25 as the power is about 10 µW, offering a method to achieve effective amplitude modulation. In addition, laser tuning is able to provide localized material change with a high resolution in the nanometer range, which can be further controlled by the numerical aperture of the focusing objective, the wavelength of the laser beam and the laser power.…”
Section: Structure and Optical Property Of Graphene Metamaterialsmentioning
confidence: 99%
“…in silica, borate and tellurite glass matrices have been fabricated and investigated for their SHG and EO properties. Because of low loss and refractive index matching requirements, tellurite glasses with small concentrations of ferroelectric oxides are promising systems for second order non-linear effects [47]. Lipovskii et.…”
Section: -Glasses Must Demonstrate Low Crystallization Ability;mentioning
confidence: 99%