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High performance reflection gratings in nematiclike photorefractive polymers
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10.1063/1.2053363
/content/aip/journal/apl/87/12/10.1063/1.2053363
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/12/10.1063/1.2053363

Figures

Image of FIG. 1.
FIG. 1.

Two beam coupling gain coefficient in reflection grating geometry as a function of the applied electric field for -polarized optical waves at . The solid lines correspond to a quadratic increase of the gain coefficient.

Image of FIG. 2.
FIG. 2.

A schematic diagram of the HOMO energy levels of the PPT-TPA photoconductive polymer, the PDCST and DDCST chromophores relative to the HOMO level of the PPT-CZ photoconductive polymer.

Image of FIG. 3.
FIG. 3.

Response rate per unit intensity as a function of the applied electric field (on a square-root scale) at a fringe spacing of and .

Tables

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Table I.

Specific photoconductivity , conductivity contrast (see text) recalculated for the intensity used in the two-wave mixing measurements, two-wave mixing gain coefficient , diffraction efficientcy , response time , response rate , effective trap density for the investigated photorefractive composites based on mesophase photoconductive polymers in reflection grating geometry .

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/content/aip/journal/apl/87/12/10.1063/1.2053363
2005-09-13
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High performance reflection gratings in nematiclike photorefractive polymers
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/12/10.1063/1.2053363
10.1063/1.2053363
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