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Study of the inhibition period prior to the holographic grating formation in liquid crystal photopolymerizable materials

Tigran V Galstian ,Steven Harbour ,Artur V Galstyan ,Rafik S Hakobyan
Center for Optics, Photonics and Lasers, Faculty of Sciences and Engineering, Physics Department, Laval University, Department of Physics, Yerevan State University
We theoretically describe the experimentally observed inhibition period prior to the holo-graphic grating formation in liquid crystal photopolymerizable materials. The proposed model explains the inhibition period of grating formation by the presence of oxygen, or other inhibitor molecules, which initially suppress the creation of free radicals. The theoretical dependence of inhibition period on the recording intensity is in good accordance with experimental results.

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