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Optics Letters

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  • Vol. 23, Iss. 4 — Feb. 15, 1998
  • pp: 253–255

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

I. C. Khoo, S. Slussarenko, B. D. Guenther, Min-Yi Shih, P. Chen, and W. V. Wood  »View Author Affiliations


Optics Letters, Vol. 23, Issue 4, pp. 253-255 (1998)
http://dx.doi.org/10.1364/OL.23.000253


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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.

© 1998 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(100.0100) Image processing : Image processing
(160.3710) Materials : Liquid crystals
(160.5320) Materials : Photorefractive materials
(190.0190) Nonlinear optics : Nonlinear optics

Citation
I. C. Khoo, S. Slussarenko, B. D. Guenther, Min-Yi Shih, P. Chen, and W. V. Wood, "Optically induced space-charge fields, dc voltage, and extraordinarily large nonlinearity in dye-doped nematic liquid crystals," Opt. Lett. 23, 253-255 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-4-253


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References

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