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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 8 — Aug. 1, 2002
  • pp: 1941–1945

Femtosecond lattice relaxation induced by inner-shell excitation

Taro Sekikawa, Tomohiro Yamazaki, Yasuo Nabekawa, and Shuntaro Watanabe  »View Author Affiliations


JOSA B, Vol. 19, Issue 8, pp. 1941-1945 (2002)
http://dx.doi.org/10.1364/JOSAB.19.001941


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Abstract

The ultrafast relaxation dynamics of the inner-shell excitation in a CsCl crystal were investigated, for the first time to our knowledge, by use of the high harmonics of a femtosecond Ti:sapphire laser. The luminescence due to the recombination between the valence electron and the inner-shell hole evolved with a time constant of 220±50 fs, corresponding to the lattice-displacement time for the self-trapping of the inner-shell hole. This is the first observation of the lattice relaxation induced by the inner-shell excitation on the femtosecond time scale. The dynamics of the inner-shell hole are discussed by use of a configuration-coordinate model for the inner-shell hole.

© 2002 Optical Society of America

OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(300.6560) Spectroscopy : Spectroscopy, x-ray
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Citation
Taro Sekikawa, Tomohiro Yamazaki, Yasuo Nabekawa, and Shuntaro Watanabe, "Femtosecond lattice relaxation induced by inner-shell excitation," J. Opt. Soc. Am. B 19, 1941-1945 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-8-1941


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