Analytical model of light beam diffraction by one-dimensional electrically controlled non-uniform transmission photon PDLC structures

Abstract

A mathematical model describing two-dimensional diffraction of quasi-monochromatic light beams by onedimensional electrically controlled non-uniform holographic photon structures in photopolymer dispersed liquid crystal (PDLC) materials is presented. The model describes light field distributions in the near and far field zones with allowance for the refractive index profile in the structure, light beam divergence, and encapsulation of liquid crystal molecules.

A Theoretical Model of the Holographic Formation of Controllable Waveguide Channels System in Photopolymer Liquid Crystalline Composition

“…In our recent works [9][10][11][12][13][14][15][16][17][18], we have seen that the impact of the external electric field on the holographic structure formed in PDLC (PSLC) leads to the refractive index change due to electro-optical orientation mechanisms, that is typical to liquid crystals, and the recorded structure can be "erased". So, it can be supposed that the impact of external electric field on individual waveguides will lead to its "erasing", and it is possible to "switch off" some waveguides or change the system's period, and so on.…”

Research of light diffraction on multilayer PPM-LC diffraction structures under conditions of external electrical influence

“…In the last few years, various teams of researchers from different countries have been studying multilayer inhomogeneous holographic diffraction structures (MIHDS) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. MIHDS are several volumetric lattices separated by optically homogeneous intermediate layers [1][2][3][4].…”

“…By expression (11), the dependences of the diffraction efficiency of a four-layer diffraction structure on the change in the phase mismatch and the applied electric field on different layers (Figures 3-6) at extraordinary natural waves with homogeneous and inhomogeneous profiles are obtained.…”