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

Electrical Engineering

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

149 Scopus citations

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

General Computer Science
Electrical and Electronic Engineering

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10.1109/5.796353

Cite this

@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",

doi = "10.1109/5.796353",

language = "English (US)",

volume = "87",

pages = "1897--1911",

journal = "Proceedings of the IEEE",

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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DO - 10.1109/5.796353

M3 - Article

AN - SCOPUS:0033221424

SN - 0018-9219

VL - 87

SP - 1897

EP - 1911

JO - Proceedings of the IEEE

JF - Proceedings of the IEEE

IS - 11

ER -

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

Abstract

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