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Optical interference effects in microscale PDLC two-dimensional layers♣

G. B. HADJICHRISTOV1,* , Y. G. MARINOV1, A. G. PETROV1

Affiliation

  1. Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

Abstract

Optical interference effects are studied in electrically controlled microscale two-dimensional layers of polymer-dispersed liquid-crystal (PDLC) bipolar droplets with a size gradient. The peculiarities observed in the transmission and diffraction of coherent light, illuminating such a PDLC thin film, are attributed to the phase retardation induced in the layer and are related to both material and structural properties of the PDLC system. Controlling the induced optical phase shift, and, thereby, the optical interference, the droplet gradient makes the microscale PDLC two-dimensional layer feasible to operate as a tunable phase-grating device..

Keywords

Electro-optical materials, Polymer-dispersed liquid crystals, Phase gratings, Single layers, Gradient layers.

Submitted at: Nov. 5, 2008
Accepted at: Sept. 9, 2009

Citation

G. B. HADJICHRISTOV, Y. G. MARINOV, A. G. PETROV, Optical interference effects in microscale PDLC two-dimensional layers♣, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 9, pp. 1190-1193 (2009)