3RD-ORDER NONLINEAR-OPTICAL PROPERTIES IN LANGMUIR-BLODGETT-FILMS OF 4-DOCOSYLAMINO-4-NITROAZOBENZENE

被引:3
|
作者
FUJIWARA, I
ISHIBASHI, T
ASAI, N
机构
[1] Sony Corporation Research Center, Hodogaya-ku, Yokohama 240
关键词
D O I
10.1063/1.355905
中图分类号
O59 [应用物理学];
学科分类号
摘要
The third-order nonlinear optical properties of 4-docosylamino-4-nitroazobenzene (DANAB) Langmuir-Blodgett (LB) films were investigated. The orientation of the DANAB molecules in the LB film is designed to be aligned virtually perpendicular to the substrate by mixing DANA-B and fatty acid, which has the effect of preventing the cascading effect. It was found that DANAB film, mixed with a fatty acid, form H aggregates. The frequency dispersion was measured using the third harmonic generation method with the optical parametric oscillator. It is indicated that the third-order nonlinear optical susceptibility [chi(3)] is enhanced because of the resonance and molecular aggregation effects. The value of the chi(3) under the resonant condition of 3. 1 X 10(-12) esu and that under the nonresonant condition of 1.5 x 10(-12) esu were obtained.
引用
收藏
页码:4759 / 4761
页数:3
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