Circularly-induced χ(2) grating in the CHBrClF incorporated within the olygoetheracrylate photopolymer matrices
2005
Abstract We have found that CHBrClF chromophore incorporated into olygoetheracrylate photopolymer matrices might be considered like promising materials for optical poling excited by circularly polarized bicolor coherent light. The maximally-achieved value of the second-order optical susceptibility caused by circularly polarized light for the wavelength 1760 nm was equal to about 0.82 pm/V. Maximal susceptibility is achieved for the 4.65% of chromophores. The further increase of the second-order susceptibility is limited by appearance of the chromophore CHBrClF agglomerates. The investigated composites possess long-lived χ (2) grating which decreases by not more than 24% after 800 min of laser treatment.
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