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

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

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

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

Research output: Contribution to journal › Conference article › peer-review

Abstract

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 language	English
Pages (from-to)	143-146
Number of pages	4
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume	22
Issue number	1-4
Publication status	Published - 1999 Dec 1
Externally published	Yes
Event	Proceedings of the 1998 4th International Conference on Organic Nonlinear Optics (ICONO'4) - The 8th IKETANI Conference - Chitose, Jpn Duration: 1998 Oct 12 → 1998 Oct 15

ASJC Scopus subject areas

Control and Systems Engineering
Condensed Matter Physics

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Valence-modulation-induced optical nonlinearity of intermolecular charge-transfer Langmuir-Blodgett films. / Hasegawa, Tatsuo; Akutagawa, Tomoyuki; Konuma, Taro et al.

In: Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics, Vol. 22, No. 1-4, 01.12.1999, p. 143-146.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "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.",

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AU - Hasegawa, Tatsuo

AU - Akutagawa, Tomoyuki

AU - Konuma, Taro

AU - Nakamura, Takayoshi

AU - Kawamata, Jun

AU - Inoue, Kuon

PY - 1999/12/1

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N2 - 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.

AB - 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.

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

Abstract

ASJC Scopus subject areas

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