Untitled

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

“…When holographic photon structures are formed in the absorbing PDLC materials through photopolymerization, diffusion [4], and encapsulation [4] mechanisms (Figs. 1 and 2), the normalized profile of the first refractive index harmonic 1 ( ) n r is highly non-uniform in the structure; moreover, it is transformed during recording [7].…”

“…In connection with the possibility of numerous applications of holographic photon structures in systems of optical communication [1] and information display [2] as basic elements of spectral selective and switching elements in photonics [1][2][3][4], investigations of the formation of and dynamic control over the diffraction properties of photon structures formed in photopolymer dispersed liquid crystal (PDLC) materials are of considerable interest.…”

“…The holographic method of forming photon structures in PDLC is most widespread [4][5][6][7][8]. Models and results of experimental investigation of forming holographic structures in the PDLC materials with allowance for the concentration of liquid crystal molecules, their encapsulation, and phase subdivision were presented in [4][5][6][7][8].…”

“…The diffraction and selective properties of the transmitting and reflecting photon structures with uniform amplitude profiles were investigated in [4][5][6][9][10][11][12][13] in the approximation of interaction of plane light waves. To investigate the potential characteristics of the photon structures in the PDLC materials used in electrically controlled spectrally selective switching elements of photonics, the influence of the non-uniform refractive index profile and light beam divergence on the diffraction and selective properties of holographic photon structures must be investigated [3,7,8,12].…”

Diffraction properties of photopolymerized liquid-crystal composites

“…The angular dependences of the light-scattering-controlled transmittance for 10-pm thick cells were measured using the procedure described in [13]. All measurements have been carried out for normal incidence of He-Ne laser emitted light (h=632.8 nm) onto the cells without an analyzer in the detecting system that therefore measured the mean intensity.…”