Band gap collapse and ultrafast “cold” melting of silicon during femtosecond laser pulse

  • S. I. Kudryashov
  • V. I. Emel’yanov
Condensed Matter

Abstract

It is established experimentally that a high concentration of electron-hole plasma produced in silicon by femtosecond laser pulse induces a sequential “collapse” of the band gap in the [111] and [100] directions and leads to the formation of a “cold” metallic liquid phase during the pulse.

PACS numbers

78.47.+p 

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Copyright information

© MAIK "Nauka/Interperiodica" 2001

Authors and Affiliations

  • S. I. Kudryashov
    • 1
  • V. I. Emel’yanov
    • 1
  1. 1.International Laser Center, Faculty of PhysicsMoscow State UniversityMoscowRussia

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