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

Research output: Contribution to journalConference articlepeer-review

17 Scopus citations

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 × 10-2 cm2 /Wwhich 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.

Original languageEnglish (US)
Article number593613
Pages (from-to)1-6
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5936
DOIs
StatePublished - Dec 1 2005
EventLiquid Crystals IX - San Diego, CA, United States
Duration: Jul 31 2005Aug 2 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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