Real-time holography in azo-dye-doped liquid crystals

Alan G. Chen; David J. Brady

doi:10.1364/OL.17.000441

Real-time holography in azo-dye-doped liquid crystals

Alan G. Chen, David J. Brady

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

156 Scopus citations

Abstract

When exposed to an Ar laser at 514 nm, azo-dye molecules in a nematic liquid-crystal host undergo photoisomerization from trans-isomers to cis-isomers. The conformation change of the azo-dye molecules reorients liquid-crystal molecules. Reversible polarization holograms can be recorded dynamically by this effect, with a threshold intensity as low as 3.0 mW/cm² and a response time from a few hundred microseconds to 100 ms, depending on the spatial frequency of the recorded grating.

Original language	English (US)
Pages (from-to)	441-443
Number of pages	3
Journal	Optics letters
Volume	17
Issue number	6
DOIs	https://doi.org/10.1364/OL.17.000441
State	Published - Mar 15 1992
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "When exposed to an Ar laser at 514 nm, azo-dye molecules in a nematic liquid-crystal host undergo photoisomerization from trans-isomers to cis-isomers. The conformation change of the azo-dye molecules reorients liquid-crystal molecules. Reversible polarization holograms can be recorded dynamically by this effect, with a threshold intensity as low as 3.0 mW/cm2 and a response time from a few hundred microseconds to 100 ms, depending on the spatial frequency of the recorded grating.",

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AU - Chen, Alan G.

AU - Brady, David J.

PY - 1992/3/15

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N2 - When exposed to an Ar laser at 514 nm, azo-dye molecules in a nematic liquid-crystal host undergo photoisomerization from trans-isomers to cis-isomers. The conformation change of the azo-dye molecules reorients liquid-crystal molecules. Reversible polarization holograms can be recorded dynamically by this effect, with a threshold intensity as low as 3.0 mW/cm2 and a response time from a few hundred microseconds to 100 ms, depending on the spatial frequency of the recorded grating.

AB - When exposed to an Ar laser at 514 nm, azo-dye molecules in a nematic liquid-crystal host undergo photoisomerization from trans-isomers to cis-isomers. The conformation change of the azo-dye molecules reorients liquid-crystal molecules. Reversible polarization holograms can be recorded dynamically by this effect, with a threshold intensity as low as 3.0 mW/cm2 and a response time from a few hundred microseconds to 100 ms, depending on the spatial frequency of the recorded grating.

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Real-time holography in azo-dye-doped liquid crystals

Abstract

ASJC Scopus subject areas

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