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Holographic recording in photopolymerized nanocomposite with DAST nanocrystals

Tamara Pogosian, I. Yu. Denisyuk, Isabelle Ledoux-Rak, and Ngoc Diep Lai, Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2019, vol. 19, no. 2, pp. 374–376 (in Russian). doi: 10.17586/2226-1494-2019-19-2-374-376

This paper is devoted to recording of a periodic lattice in the photopolymerized nanocomposite with nanoparticles of nonlinear optical DAST crystal (4-dimethylamino-N-methyl-4-stilbazolium tosylate) by holographic method. Nanocomposite consists of the mixture of two monomers: IDA (Isodecyl acrylate) and TMP (Trimethylolpropane ethoxylate (1 EO/OH) methyl ether diacrylate) with molecules of DAST dissolved in methanol. Initiator In2 (2,2-Dimethoxy-2-phenylacetophenone) provides photopolymerization.At solution centrifugal separation solvent evaporation and crystal formation start. It is shown that there is a record of the volume hologram when two-beam interference is used. Micro photos prove the movement of DAST nanoparticles in volume that provides creation of nonlinear grating, which can be used for quasi-phase matching of nonlinear effects.

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