Valence-modulation-induced optical nonlinearity of intermolecular charge-transfer Langmuir-Blodgett films

Tatsuo Hasegawa, Tomoyuki Akutagawa, Taro Konuma, Takayoshi Nakamura, Jun Kawamata, Kuon Inoue

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1 Citation (Scopus)


Second-order nonlinear optical properties are investigated for Langmuir-Blodgett (LB) films of charge-transfer complexes having non-centro-symmetrical molecular arrangements. The films exhibit large linear electro-optic effect (Im[χ(2)(-ω; ω, 0)] approx. 0.3 pm/V) in photon energy range of intramolecular transition, while component molecules have no permanent dipoles inside the molecules. The observed features in Im[χ(2)] spectra are discussed in terms of the electric-field-induced valence modulation effect on the intramolecular π-π* excitation of donor and acceptor molecules.

Original languageEnglish
Pages (from-to)143-146
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Issue number1-4
Publication statusPublished - 1999
EventProceedings of the 1998 4th International Conference on Organic Nonlinear Optics (ICONO'4) - The 8th IKETANI Conference - Chitose, Jpn
Duration: 1998 Oct 121998 Oct 15


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