Orientational photorefractive effects in nematic liquid crystal films

I. C. Khoo

doi:10.1109/3.485406

Orientational photorefractive effects in nematic liquid crystal films

I. C. Khoo

Materials Research Institute (MRI)

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

230 Scopus citations

Abstract

We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.

Original language	English (US)
Pages (from-to)	525-534
Number of pages	10
Journal	IEEE Journal of Quantum Electronics
Volume	32
Issue number	3
DOIs	https://doi.org/10.1109/3.485406
State	Published - Mar 1996

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Orientational photorefractive effects in nematic liquid crystal films",

abstract = "We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.",

author = "Khoo, {I. C.}",

note = "Funding Information: Manuscript received July 28, 1995; revised November 13, 1995. This work was supported in part by the Air Force Phillips Laboratory and the Army Research Office. The author is with the Department of Electrical Engineering, Pennsylvania State University, University Park, PA 16802 USA. Publisher Item Identifier S 0018-9197(96)02036-2. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "1996",

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PY - 1996/3

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N2 - We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.

AB - We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.

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Orientational photorefractive effects in nematic liquid crystal films

Abstract

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