Electro-optic properties of switchable gratings made of polymer and nematic liquid-crystal slices

A. d’Alessandro; R. Asquini; C. Gizzi; R. Caputo; C. Umeton; A. Veltri; A. V. Sukhov

doi:10.1364/OL.29.001405

Electro-optic properties of switchable gratings made of polymer and nematic liquid-crystal slices

A. d’Alessandro
, R. Asquini
, C. Gizzi
, R. Caputo
, C. Umeton
, A. Veltri
, A. V. Sukhov

Unità di Ricerca di Cosenza
University of Calabria

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

49 Scopus citations

Abstract

We report the diffraction properties at wavelengths of 632.8 and 1550 nm for volume transmission gratings made of a sequence of continuously aligned nematic liquid-crystal layers separated by isotropic polymer slices. The gratings are generated by holographically curing a solution of liquid crystal diluted in an isotropic prepolymer by means of a laser beam at a wavelength of 352 nm with a total intensity of approximately 10 mW/cm². A diffraction efficiency of 98% was measured, and an electric field as low as 5 V/μm switches off the phase grating. Measured angular spectra are fitted by use of the modified coupled-mode theory including the effects of grating birefringence.

Original language	English
Pages (from-to)	1405-1407
Number of pages	3
Journal	Optics Letters
Volume	29
Issue number	12
DOIs	https://doi.org/10.1364/OL.29.001405
State	Published - 15 Jun 2004
Externally published	Yes

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abstract = "We report the diffraction properties at wavelengths of 632.8 and 1550 nm for volume transmission gratings made of a sequence of continuously aligned nematic liquid-crystal layers separated by isotropic polymer slices. The gratings are generated by holographically curing a solution of liquid crystal diluted in an isotropic prepolymer by means of a laser beam at a wavelength of 352 nm with a total intensity of approximately 10 mW/cm2. A diffraction efficiency of 98\% was measured, and an electric field as low as 5 V/μm switches off the phase grating. Measured angular spectra are fitted by use of the modified coupled-mode theory including the effects of grating birefringence.",

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T1 - Electro-optic properties of switchable gratings made of polymer and nematic liquid-crystal slices

AU - d’Alessandro, A.

AU - Asquini, R.

AU - Gizzi, C.

AU - Caputo, R.

AU - Umeton, C.

AU - Veltri, A.

AU - Sukhov, A. V.

PY - 2004/6/15

Y1 - 2004/6/15

N2 - We report the diffraction properties at wavelengths of 632.8 and 1550 nm for volume transmission gratings made of a sequence of continuously aligned nematic liquid-crystal layers separated by isotropic polymer slices. The gratings are generated by holographically curing a solution of liquid crystal diluted in an isotropic prepolymer by means of a laser beam at a wavelength of 352 nm with a total intensity of approximately 10 mW/cm2. A diffraction efficiency of 98% was measured, and an electric field as low as 5 V/μm switches off the phase grating. Measured angular spectra are fitted by use of the modified coupled-mode theory including the effects of grating birefringence.

AB - We report the diffraction properties at wavelengths of 632.8 and 1550 nm for volume transmission gratings made of a sequence of continuously aligned nematic liquid-crystal layers separated by isotropic polymer slices. The gratings are generated by holographically curing a solution of liquid crystal diluted in an isotropic prepolymer by means of a laser beam at a wavelength of 352 nm with a total intensity of approximately 10 mW/cm2. A diffraction efficiency of 98% was measured, and an electric field as low as 5 V/μm switches off the phase grating. Measured angular spectra are fitted by use of the modified coupled-mode theory including the effects of grating birefringence.

UR - https://www.scopus.com/pages/publications/2942574447

U2 - 10.1364/OL.29.001405

DO - 10.1364/OL.29.001405

M3 - Artículo

AN - SCOPUS:2942574447

SN - 0146-9592

VL - 29

SP - 1405

EP - 1407

JO - Optics Letters

JF - Optics Letters

IS - 12

ER -

Electro-optic properties of switchable gratings made of polymer and nematic liquid-crystal slices

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