Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3

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

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Abstract

The photoinduced absorption in the quasi-one-dimensional Mott insulator Sr2CuO3 in the infrared spectral region was studied. Theoretical calculations based on a two-band Hubbard model explain the experimental observations. Results indicated that the strong two-photon absorption is due to a very large dipole coupling. The potential of Sr2CuO3 for all-optical switching was demonstrated by the room temperature picosecond recovery of the optical transparency. The differential transmission was measured as a function of delay time. The relatively long-lived component of the transmission change is associated with the real excitation of the charge-transfer (CT) exciton.

Original languageEnglish (US)
Pages (from-to)2204-2207
Number of pages4
JournalPhysical Review Letters
Volume85
Issue number10
DOIs
StatePublished - Sep 4 2000

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nonlinearity
insulators
optical switching
time lag
recovery
charge transfer
excitons
dipoles
photons
room temperature
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ogasawara, T., Ashida, M., Motoyama, N., Eisaki, H., Uchida, S., Tokura, Y., ... Kuwata-Gonokami, M. (2000). Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3. Physical Review Letters, 85(10), 2204-2207. https://doi.org/10.1103/PhysRevLett.85.2204

Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3. / Ogasawara, T.; Ashida, M.; Motoyama, N.; Eisaki, H.; Uchida, S.; Tokura, Y.; Ghosh, H.; Shukla, A.; Mazumdar, Sumitendra; Kuwata-Gonokami, M.

In: Physical Review Letters, Vol. 85, No. 10, 04.09.2000, p. 2204-2207.

Research output: Contribution to journalArticle

Ogasawara, T, Ashida, M, Motoyama, N, Eisaki, H, Uchida, S, Tokura, Y, Ghosh, H, Shukla, A, Mazumdar, S & Kuwata-Gonokami, M 2000, 'Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3', Physical Review Letters, vol. 85, no. 10, pp. 2204-2207. https://doi.org/10.1103/PhysRevLett.85.2204
Ogasawara T, Ashida M, Motoyama N, Eisaki H, Uchida S, Tokura Y et al. Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3. Physical Review Letters. 2000 Sep 4;85(10):2204-2207. https://doi.org/10.1103/PhysRevLett.85.2204
Ogasawara, T. ; Ashida, M. ; Motoyama, N. ; Eisaki, H. ; Uchida, S. ; Tokura, Y. ; Ghosh, H. ; Shukla, A. ; Mazumdar, Sumitendra ; Kuwata-Gonokami, M. / Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3. In: Physical Review Letters. 2000 ; Vol. 85, No. 10. pp. 2204-2207.
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