Semiconductor Structures, Interfaces, and Surfaces

Semiconductors

, Volume 43, Issue 10, pp 1298-1304

Generation of surface electromagnetic waves in semiconductors under the action of femtosecond laser pulses

  • G. A. MartsinovskyAffiliated withSt. Petersburg State University of Information Technologies, Mechanics, and Optics
  • , G. D. ShandybinaAffiliated withSt. Petersburg State University of Information Technologies, Mechanics, and Optics Email author 
  • , Yu. S. Dement’evaAffiliated withSt. Petersburg State University of Information Technologies, Mechanics, and Optics
  • , R. V. DyukinAffiliated withSt. Petersburg State University of Information Technologies, Mechanics, and Optics
  • , S. V. ZabotnovAffiliated withFaculty of Physics, Moscow State University
  • , L. A. Golovan’Affiliated withFaculty of Physics, Moscow State University
  • , P. K. KashkarovAffiliated withKurchatov Institute Russian Research Center

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Abstract

It is demonstrated that intense photoexcitation of the surface of a semiconductor with femtosecond laser pulses can induce fundamental changes in its optical response and ensure conditions for the generation of surface electromagnetic waves of various types. The connection between electronic processes initiated in the surface layer by photoexcitation and the formation of periodic surface microstructures observed in experiments on irradiation of Si targets is considered. The importance of photoemission in the processes taking place under ultrashort excitation is confirmed.

PACS numbers

73.20.Mf 81.40.Tv 81.40.Wx