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Proceedings Article

Ultrafast dynamics of crystalline bismuth studied by femtosecond pulses in visible and near-infrared range

[+] Author Affiliations
A. A. Melnikov

Institute of Spectroscopy (Russian Federation) and Moscow Institute of Physics and Technology (Russian Federation)

O. V. Misochko

Institute of Solid State Physics (Russian Federation)

S. V. Chekalin

Institute of Spectroscopy (Russian Federation)

Proc. SPIE 7993, ICONO 2010: International Conference on Coherent and Nonlinear Optics, 79931J (January 11, 2011); doi:10.1117/12.881340
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From Conference Volume 7993

  • ICONO 2010: International Conference on Coherent and Nonlinear Optics
  • Kazan, Russian Federation | August 23, 2010

abstract

Ultrafast dynamics of bismuth excited by femtosecond laser pulses was studied varying wavelength of pump and probe pulses from 400 to 2500 nm and from 400 to 900 nm respectively. Three relaxational components with decay rates of 1 ps, 7 ps and ~ 1 ns were found in the photoinduced response. The fastest process is ascribed to the excited electrons at T6+ point of the Brillouin zone, that are responsible for coherent A1g phonon generation and its frequency softening. Intermediate component is due to crystal heating via electron-phonon interaction. Finally, a long-lived nanosecond signal is linked to electrons near the Fermi level at Ls point.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

A. A. Melnikov ; O. V. Misochko and S. V. Chekalin
"Ultrafast dynamics of crystalline bismuth studied by femtosecond pulses in visible and near-infrared range", Proc. SPIE 7993, ICONO 2010: International Conference on Coherent and Nonlinear Optics, 79931J (January 11, 2011); doi:10.1117/12.881340; http://dx.doi.org/10.1117/12.881340


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