Interband two-photon transition in Mott insulator as a new mechanism for ultrafast optical nonlinearity

被引：0

作者：

Ashida, M ^{[1
]}

Ogasawara, T ^{[1
]}

Motoyama, N ^{[1
]}

Eisaki, H ^{[1
]}

Uchida, S ^{[1
]}

Taguchi, Y ^{[1
]}

Tokura, Y ^{[1
]}

Kuwata-Gonokami, M ^{[1
]}

Ghosh, H ^{[1
]}

Shukla, A ^{[1
]}

Mazumdar, S ^{[1
]}

机构：

[1] Japan Sci & Technol Corp, Cooperat Excitat Project, Explorat Res Adv Technol, Kawasaki, Kanagawa 2130012, Japan

来源：

PROCEEDINGS OF THE 2000 INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER | 2001年

关键词：

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The dimensionality dependence of optical nonlinearity in cuprates; was investigated by sub-picosecond pump-probe transmission measurements in the near-infrared region. It was found that cuprates with one-dimensional Cu-O networks show nonlinearity one order of magnitude larger than that of conventional band semiconductors and picosecond relaxation of the excited state. In contrast, a two-dimensional cuprate shows one order of magnitude smaller nonlinearity and slower decay of the excited state, as well as picosecond relaxation. The possibility for application of the present material to all-optical switching devices is also discussed.

引用

页码：60 / 64

页数：5

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