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Opt Lett. 2004 Jun 1;29(11):1261-3.

Development of a new kind of switchable holographic grating made of liquid-crystal films separated by slices of polymeric material.

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  • 1Liquid Crystal Laboratory, Istituto Nazionale per la Fisica della Materia, Unità di Ricerca di Cosenza and Dipartimento di Fisica, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy.


We present a new kind of UV-cured holographic grating that consists of polymer slices alternated with pure nematic films. By preventing the appearance of the nematic phase during the curing process, it is possible to avoid the formation of liquid-crystal droplets and obtain a sharp and uniform morphology, which reduces scattering losses and increases diffraction efficiency.

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