14 November 2003 Electro- and nonlinear optics of liquid crystal materials with nanoparticulate internal structure
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The combination of liquid crystals (LCs) and reconfigurable nanoparticulate networks results in most versatile materials for controlling light beams. These material systems can be used for developing multi-functional reconfigurable photonics and opto-electronics components and spatial light modulators with ultimate light modulating capabilities. We review here our results in laser recording of one and two-dimensional diffraction gratings and gratings with variable pitch. Nonlinear optical properties of LC with nanoparticulate internal networks and diffraction gratings laser-recorded in these materials are discussed. Nanoparticulate networks are capable of stabilizing the thermodynamic relaxation of photoinduced cis-isomers of molecules in photosensitive azobenzene LCs used as host for the nanoparticulate network leading to bistability of the phase state (anisotropic and isotropic) of the material, and reversible all-optical switching between those states.
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Nelson Tabiryan, Vladimir Grozhik, Sarik Nersisyan, Svetlana Serak, "Electro- and nonlinear optics of liquid crystal materials with nanoparticulate internal structure", Proc. SPIE 5222, Nanocrystals, and Organic and Hybrid Nanomaterials, (14 November 2003); doi: 10.1117/12.503108; https://doi.org/10.1117/12.503108

Liquid crystals

Diffraction gratings

Light scattering





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