Optically induced orientational transitions in nematics with planar alignment

Abstract

Theoretical study of dynamical phenomena induced by a linearly polarized plane wave incident perpendicularly on a planar aligned nematic layer with the light intensity as the control parameter is reported. We find the threshold of the Optically Induced Freedericksz Transition for the planar state as a function of the problem parameters. It occurs that the threshold is substantially lower than that expected before. Above the primary instability the director settles either to a stationary or to an oscillatory states depending on a thickness of the layer. These states become unstable at a secondary threshold through a heteroclinic bifurcation and the director settles to a new stationary distorted state.

References in corpus (2)

• All-optical switching and multistability in photonic structures with liquid crystal defects
• Pattern forming instability induced by light in pure and dye-doped nematic liquid crystals

Cited by in corpus (1)

• Optomechanics of liquid crystals for dynamical optical response of photonic structures