Electro-optical and nonlinear optical properties of semiconductor nanorod doped liquid crystals

Yana Williams; Kan Chan; Jae Hong Park; Iam Choon Khoo; Brad Lewis; Thomas E. Mallouk

doi:10.1117/12.617730

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20 August 2005 Electro-optical and nonlinear optical properties of semiconductor nanorod doped liquid crystals

Yana Williams, Kan Chan, Jae Hong Park, Iam Choon Khoo, Brad Lewis, Thomas E. Mallouk

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Proceedings Volume 5936, Liquid Crystals IX; 593613 (2005) https://doi.org/10.1117/12.617730
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We studied the electro-optical property and photorefractive effects in a semiconductor CdSe nanorod doped neamtic liquid crystal [NLC] system. The nonlinear index coefficient is measured to be n₂=2.05×10⁻²cm²/W, which is 10 times larger than that of an equivalent pure liquid crystal system. Electro-optical switching investigation shows that the Freedericksz transition voltage of this system is also noticeably lower than that of un-doped NLC. These enhanced electro- and nonlinear optical properties are attributed to the photoconductivity of CdSe nanorods and the enlarged electric conductivity and dielectric anisotropies of the doped system. An AC field assisted photorefractive effect in CdSe nanorod doped liquid crystal system has also been studied.

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Yana Williams, Kan Chan, Jae Hong Park, Iam Choon Khoo, Brad Lewis, and Thomas E. Mallouk "Electro-optical and nonlinear optical properties of semiconductor nanorod doped liquid crystals", Proc. SPIE 5936, Liquid Crystals IX, 593613 (20 August 2005); https://doi.org/10.1117/12.617730

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