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

M. Ashida; T. Ogasawara; N. Motoyama; H. Eisaki; S. Uchida; Y. Taguchi; Y. Tokura; M. Kuwata-Gonokami; H. Ghosh; A. Shukla; S. Mazumdar

doi:10.1142/s0217979201008305

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

M. Ashida, T. Ogasawara, N. Motoyama, H. Eisaki, S. Uchida, Y. Taguchi, Y. Tokura, M. Kuwata-Gonokami, H. Ghosh, A. Shukla, S. Mazumdar

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	3628-3632
Number of pages	5
Journal	International Journal of Modern Physics B
Volume	15
Issue number	28-30
DOIs	https://doi.org/10.1142/s0217979201008305
State	Published - Dec 10 2001

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Condensed Matter Physics

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

abstract = "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.",

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T1 - Interband two-photon transition in Mott insulator as a new mechanism for ultrafast optical nonlinearity

AU - Ashida, M.

AU - Ogasawara, T.

AU - Motoyama, N.

AU - Eisaki, H.

AU - Uchida, S.

AU - Taguchi, Y.

AU - Tokura, Y.

AU - Kuwata-Gonokami, M.

AU - Ghosh, H.

AU - Shukla, A.

AU - Mazumdar, S.

PY - 2001/12/10

Y1 - 2001/12/10

N2 - 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.

AB - 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.

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

Abstract

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