Influence of the backward propagating waves on the threshold in planar nematic liquid crystal films

摘要

We analyze theoretically the influence of backward propagating waves on theprimary threshold when a linearly polarized light impinges at normal incidenceon a planarly aligned nematic liquid crystal films. We show, that the primarythreshold, as a function of the phase delay induced by the nematic layer,exhibits oscillations. The amplitude of oscillations depends strongly on thedrop of the refractivity indices of the nematic and outer media at theboundaries.