Dye-doped photorefractive liquid crystals for dynamic and storage holographic grating formation and spatial light modulation

Iam Choon Khoo; Min Y.I. Shih; Michael V. Wood; Brett D. Guenther; Pao Hsu Chen; Francesco Simoni; Sergei S. Slussarenko; Oriano Francescangeli; Liana Lucchetti

doi:10.1109/5.796353

Dye-doped photorefractive liquid crystals for dynamic and storage holographic grating formation and spatial light modulation

Iam Choon Khoo, Min Y.I. Shih, Michael V. Wood, Brett D. Guenther, Pao Hsu Chen, Francesco Simoni, Sergei S. Slussarenko, Oriano Francescangeli, Liana Lucchetti

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

144 Citations (SciVal)

Abstract

The basic mechanisms of photo-induced space charge field formation, director axis re-orientation, and refractive index changes in fullerene C60- and dye-doped nematic liquid crystals films are presented. In particular, in aligned methyl-red-doped nematic liquid crystal film, we observe a nonlinear index change coefficient as high as 10 cm²/W, associated with purely optically induced liquid crystal director axis re-orientation. Experimental observations of dynamic and high-resolution storage holographic grating formation, two beam coupling with gain of nearly 3000 cm^-1, optical limiting action at nanowatt cw laser power, and incoherent-coherent image conversion at μW/cm² light intensity level are discussed.

Original language	English (US)
Pages (from-to)	1897-1911
Number of pages	15
Journal	Proceedings of the IEEE
Volume	87
Issue number	11
DOIs	https://doi.org/10.1109/5.796353
State	Published - 1999

All Science Journal Classification (ASJC) codes

Computer Science(all)
Electrical and Electronic Engineering

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@article{25ad965f7f924c40a051a3400853c652,

title = "Dye-doped photorefractive liquid crystals for dynamic and storage holographic grating formation and spatial light modulation",

abstract = "The basic mechanisms of photo-induced space charge field formation, director axis re-orientation, and refractive index changes in fullerene C60- and dye-doped nematic liquid crystals films are presented. In particular, in aligned methyl-red-doped nematic liquid crystal film, we observe a nonlinear index change coefficient as high as 10 cm2/W, associated with purely optically induced liquid crystal director axis re-orientation. Experimental observations of dynamic and high-resolution storage holographic grating formation, two beam coupling with gain of nearly 3000 cm-1, optical limiting action at nanowatt cw laser power, and incoherent-coherent image conversion at μW/cm2 light intensity level are discussed.",

author = "Khoo, {Iam Choon} and Shih, {Min Y.I.} and Wood, {Michael V.} and Guenther, {Brett D.} and Chen, {Pao Hsu} and Francesco Simoni and Slussarenko, {Sergei S.} and Oriano Francescangeli and Liana Lucchetti",

note = "Funding Information: Manuscript received October 8, 1998; revised March 30, 1999. This work was supported by the Army Research Office, the Air Force Research Laboratory, and NATO Collaborative Grant CRG 950163.",

year = "1999",

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language = "English (US)",

volume = "87",

pages = "1897--1911",

journal = "Proceedings of the Institute of Radio Engineers",

issn = "0018-9219",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "11",

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TY - JOUR

T1 - Dye-doped photorefractive liquid crystals for dynamic and storage holographic grating formation and spatial light modulation

AU - Khoo, Iam Choon

AU - Shih, Min Y.I.

AU - Wood, Michael V.

AU - Guenther, Brett D.

AU - Chen, Pao Hsu

AU - Simoni, Francesco

AU - Slussarenko, Sergei S.

AU - Francescangeli, Oriano

AU - Lucchetti, Liana

N1 - Funding Information: Manuscript received October 8, 1998; revised March 30, 1999. This work was supported by the Army Research Office, the Air Force Research Laboratory, and NATO Collaborative Grant CRG 950163.

PY - 1999

Y1 - 1999

N2 - The basic mechanisms of photo-induced space charge field formation, director axis re-orientation, and refractive index changes in fullerene C60- and dye-doped nematic liquid crystals films are presented. In particular, in aligned methyl-red-doped nematic liquid crystal film, we observe a nonlinear index change coefficient as high as 10 cm2/W, associated with purely optically induced liquid crystal director axis re-orientation. Experimental observations of dynamic and high-resolution storage holographic grating formation, two beam coupling with gain of nearly 3000 cm-1, optical limiting action at nanowatt cw laser power, and incoherent-coherent image conversion at μW/cm2 light intensity level are discussed.

AB - The basic mechanisms of photo-induced space charge field formation, director axis re-orientation, and refractive index changes in fullerene C60- and dye-doped nematic liquid crystals films are presented. In particular, in aligned methyl-red-doped nematic liquid crystal film, we observe a nonlinear index change coefficient as high as 10 cm2/W, associated with purely optically induced liquid crystal director axis re-orientation. Experimental observations of dynamic and high-resolution storage holographic grating formation, two beam coupling with gain of nearly 3000 cm-1, optical limiting action at nanowatt cw laser power, and incoherent-coherent image conversion at μW/cm2 light intensity level are discussed.

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JF - Proceedings of the Institute of Radio Engineers

IS - 11

ER -

Dye-doped photorefractive liquid crystals for dynamic and storage holographic grating formation and spatial light modulation

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