Large Optical Nonlinearity in Pseudoisocyanine J-Aggregates
作者:
Shunsuke Kobayashi,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1992)
卷期:
Volume 217,
issue 1
页码: 77-81
ISSN:1058-725X
年代: 1992
DOI:10.1080/10587259208046880
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The resonant optical nonlinearity in pseudoisocya‐nine J‐aggregate is investigated. Large degenerate four wave mixing signals and negative absorption changes at the wavelengths corresponding to J‐aggregate absorption band are observed. It is concluded that the origin of the large optical nonlinearity is mainly due to the absorption saturation of J‐band. The mechanism of the absorption saturation is discussed on the bases of exciton delocalization effect.
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