期刊
JAPANESE JOURNAL OF APPLIED PHYSICS
卷 47, 期 8, 页码 6312-6316出版社
JAPAN SOCIETY APPLIED PHYSICS
DOI: 10.1143/JJAP.47.6312
关键词
chalcone; z-scan; nonlinear absorption; nonlinear refraction; second-order hyperpolarizability
资金
- Korea Science and Engineering Foundation [R0A-2007-000-20113-0]
- Korean Government [MOEHRD, KRF-2007-412-J04002]
The third-order nonlinear optical properties of derivatives of dibenzylideneacetone were investigated using the single beam z-scan technique at 532 nm. A strong dependence of third-order optical nonlinearity on electron donor and acceptor type of substituents was observed. An enhancement in chi((3))-value of one order of magnitude was achieved upon the substitution of strong electron donors compared to that of the molecule substituted with an electron acceptor. The magnitude of nonlinear refractive index of these chalcones is as high as of 10(-11) esu. Their nonlinear optical coefficients are larger than those of widely used thiophene oligomers and trans-1-[p-(p-dimethylaminobenzyl-azo)-benzyl]-2-(N-methyl-4-pyridinium)-ethene iodide (DABA-PEI) organic compounds.
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