Distribution of Dye and Mesogen Molecules Orientation in Photoaligning Layer vs. Aperture of Polarized Light Beam

Abstract

Orientation of dyes and liquid crystals molecules in the field of laser radiation is considered taking into account anisotropy of molecular optical polarizability. A dependence of dyes and liquid crystals clusters energy on the strength of laser radiation electrical field, aperture of the light beam, optical polarizability anisotropy, order parameter and the number of molecules in a cluster, is derived. The angular distribution function of clusters is derived depending on the aperture of the light beam.

Keywords:

• Dyes
• liquid crystals
• photoalignment
• laser irradiation
• polarized light
• aperture

Acknowledgments

The project is supported by REBR grants #10-07-00385-a, 14-07-90009_Bel_a. RF President NSh-1495.2012.8 grant and by Hong-Kong grants CERG 612409, CERG 612310.