Integrated electro-optic switch in liquid crystals

Liquid Crystals for Electro-optic Applications

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Electro-Optic Response of Liquid Crystals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Liquid Crystalline State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Physical Properties of Liquid Crystals . . . . . . . . . . . . . . . . . . . . . . ....

Electro-Optic Kerr Effect in Polymer-Stabilized Isotropic Liquid Crystals

Electro-optic response of polymer-stabilized blue phase liquid crystals

The dynamic response of a polymer-stabilized blue phase liquid crystal (BPLC) is comprised of two distinct processes: Kerr effect-induced local reorientation and electrostriction-induced lattice distortion. A double exponential rise/decay model is proposed to analyze the underlying physical mechanisms. If the electric field is below a critical field (Ec), Kerr effect dominates and the response ...

Liquid-crystals electro-optic modulator based on electrohydrodynamic effects.

A new method of light modulation is reported. This method is based on the electro-optical properties of nematic materials and on the use of a new wedge structure. The advantages of this structure are the possibility of modulating nonpolarized light and the improved signal-to-noise ratio. The highest modulating frequency obtained is 25 kHz.

Physical Aspects of Electro-optic Properties of Smectic Liquid Crystals

We present an E ective Internal Field Model for the antiferroelectric (AF) to eld induced ferroelectric (FF) transition of smectic CA. This model attributes the fast dynamics and high threshold elds of this transition to the large magnitudes of its in-plane polarization. We conclude that propagating ngers observed in the vicinity of the AF $ FF threshold eld can only be observed in holding elds...