Kim Eun Ju, Yang Hye Ri, Lee Sang Jo, Kim Gun Yeup, Kwak Chong Hoon
Department of Physics, Yeungnam University, Kyongsan 712-749, Korea.
Opt Express. 2008 Oct 27;16(22):17329-41. doi: 10.1364/oe.16.017329.
We investigated the diffraction properties of dynamic holograms recorded in porphyrin:Zn doped nematic liquid crystals (NLCs) under the influence of an applied dc electric field for various conditions of the grating period, the writing beam intensity and the applied electric field. We also derived an analytic expression for diffraction efficiency from NLCs material equations and torque balance equations and compared the experimental results with the theory, revealing excellent agreement.
