Optically induced space-charge fields, dc voltage, and extraordinarily large nonlinearity in dye-doped nematic liquid crystals

Iam-choon Khoo, S. Slussarenko, B. D. Guenther, Min Yi Shih, P. Chen, W. V. Wood

Research output: Contribution to journalArticle

216 Citations (Scopus)

Abstract

We have observed extraordinarily large optical nonlinearity in Methyl Red-doped nematic liquid-crystal film. Grating diffraction can be generated with an optical intensity as low as 40 μW/cm2, and a refractive-index change coefficient of more than 6 cm2/W is obtained. The effect is attributed to formation of an optically induced dc space-charge field and to the resulting reorientation of the highly birefringent nematic director axis.

Original languageEnglish (US)
Pages (from-to)253-255
Number of pages3
JournalOptics Letters
Volume23
Issue number4
DOIs
StatePublished - Feb 15 1998

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gratings (spectra)
doped crystals
retraining
space charge
dyes
liquid crystals
nonlinearity
refractivity
electric potential
coefficients

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Khoo, Iam-choon ; Slussarenko, S. ; Guenther, B. D. ; Shih, Min Yi ; Chen, P. ; Wood, W. V. / Optically induced space-charge fields, dc voltage, and extraordinarily large nonlinearity in dye-doped nematic liquid crystals. In: Optics Letters. 1998 ; Vol. 23, No. 4. pp. 253-255.
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Optically induced space-charge fields, dc voltage, and extraordinarily large nonlinearity in dye-doped nematic liquid crystals. / Khoo, Iam-choon; Slussarenko, S.; Guenther, B. D.; Shih, Min Yi; Chen, P.; Wood, W. V.

In: Optics Letters, Vol. 23, No. 4, 15.02.1998, p. 253-255.

Research output: Contribution to journalArticle

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AU - Khoo, Iam-choon

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AU - Guenther, B. D.

AU - Shih, Min Yi

AU - Chen, P.

AU - Wood, W. V.

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