Effect of beam attenuation on photorefractive grating erasure

Martin Liphardt; Arosha Goonesekera; Stephen Ducharme; James M. Takacs; Lei Zhang

doi:10.1364/JOSAB.13.002252

Effect of beam attenuation on photorefractive grating erasure

Martin Liphardt, Arosha Goonesekera, Stephen Ducharme, James M. Takacs, Lei Zhang

Chemistry

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We investigate the influence of attenuation on the speed of erasure of photorefractive gratings by solving the coupled-wave equations in the undepleted pump approximation and by taking into account the attenuation and Gaussian intensity profile of all the beams. The extrinsic grating decay rate is significantly lower than the intrinsic photorefractive decay rate in samples with overall attenuation as low as 10%. The Gaussian beam profiles of the readout and the erasing beams result in a further reduction of the extrinsic decay rate. The results of these calculations are used to determine the spectrum of intrinsic decay rates in a photorefractive polymer.

Original language	English (US)
Pages (from-to)	2252-2260
Number of pages	9
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	13
Issue number	10
DOIs	https://doi.org/10.1364/JOSAB.13.002252
State	Published - Oct 1996

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

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10.1364/JOSAB.13.002252

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abstract = "We investigate the influence of attenuation on the speed of erasure of photorefractive gratings by solving the coupled-wave equations in the undepleted pump approximation and by taking into account the attenuation and Gaussian intensity profile of all the beams. The extrinsic grating decay rate is significantly lower than the intrinsic photorefractive decay rate in samples with overall attenuation as low as 10%. The Gaussian beam profiles of the readout and the erasing beams result in a further reduction of the extrinsic decay rate. The results of these calculations are used to determine the spectrum of intrinsic decay rates in a photorefractive polymer.",

author = "Martin Liphardt and Arosha Goonesekera and Stephen Ducharme and Takacs, {James M.} and Lei Zhang",

year = "1996",

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AU - Liphardt, Martin

AU - Goonesekera, Arosha

AU - Ducharme, Stephen

AU - Takacs, James M.

AU - Zhang, Lei

PY - 1996/10

Y1 - 1996/10

N2 - We investigate the influence of attenuation on the speed of erasure of photorefractive gratings by solving the coupled-wave equations in the undepleted pump approximation and by taking into account the attenuation and Gaussian intensity profile of all the beams. The extrinsic grating decay rate is significantly lower than the intrinsic photorefractive decay rate in samples with overall attenuation as low as 10%. The Gaussian beam profiles of the readout and the erasing beams result in a further reduction of the extrinsic decay rate. The results of these calculations are used to determine the spectrum of intrinsic decay rates in a photorefractive polymer.

AB - We investigate the influence of attenuation on the speed of erasure of photorefractive gratings by solving the coupled-wave equations in the undepleted pump approximation and by taking into account the attenuation and Gaussian intensity profile of all the beams. The extrinsic grating decay rate is significantly lower than the intrinsic photorefractive decay rate in samples with overall attenuation as low as 10%. The Gaussian beam profiles of the readout and the erasing beams result in a further reduction of the extrinsic decay rate. The results of these calculations are used to determine the spectrum of intrinsic decay rates in a photorefractive polymer.

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JF - Journal of the Optical Society of America B: Optical Physics

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Effect of beam attenuation on photorefractive grating erasure

Abstract

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