The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics

, Volume 28, Issue 3, pp 435–445

First-order Fréedericksz transition and front propagation in a liquid crystal light valve with feedback

  • M. G. Clerc
  • T. Nagaya
  • A. Petrossian
  • S. Residori
  • C. S. Riera
Article

DOI: 10.1140/epjd/e2003-00316-1

Cite this article as:
Clerc, M.G., Nagaya, T., Petrossian, A. et al. Eur. Phys. J. D (2004) 28: 435. doi:10.1140/epjd/e2003-00316-1

Abstract.

Fréedericksz transition can become subcritical in the presence of a feedback mechanism that leads to the dependence of the local electric field onto the liquid crystal re-orientation angle. We have characterized experimentally the first-order Fréedericksz transition in a Liquid Crystal Light Valve with optical feedback. The bistability region is determined, together with the Fréedericksz transition point and the Maxwell point. We show the propagation of fronts connecting the different metastable states and we estimate the front velocity. Theoretically, we derive an amplitude equation, valid close to the Fréedericksz transition point, which accounts for the subcritical character of the bifurcation.

Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • M. G. Clerc
    • 1
  • T. Nagaya
    • 2
  • A. Petrossian
    • 3
  • S. Residori
    • 4
  • C. S. Riera
    • 5
  1. 1.Departamento de Física, Facultad de Ciencias Físicas y MatemáticasUniversidad de ChileSantiagoChile
  2. 2.Department of Electrical and Electronic Engineering, Faculty of EngineeringOkayama UniversityJapan
  3. 3.Physics DepartmentYerevan St. University 1375049Armenia
  4. 4.Institut Non Linéaire de NiceUMR 6618 CNRS-UNSAValbonneFrance
  5. 5.DAMTP-CMSCambridgeUK