Effect of optical breakdown on second harmonic generation from Si(111)7 × 7 with Nd:YAG laser

Ken Nakamura, Shingo Ichimura, Hazime Shimizu

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4 Citations (Scopus)

Abstract

Effect of optical breakdown on second harmonic generation (SHG) from Si(111)7 × 7 was investigated. After the irradiation of a laser beam with a threshold energy for the optical breakdown, the intensity of second harmonics (SH) polarized along the [01(formula presented)] axis measured as a function of pump-polarization showed deviation from 90° periodicity which is expected from the surface C3v symmetry, although low energy electron diffraction (LEED) still exhibited the 7×7 structure. The irradiation of a more intense laser beam led to structural disorder, resulting in complete disappearance of SH periodicity, and no pattern of LEED was exhibited.

Original languageEnglish
Pages (from-to)L1035-L1037
JournalJapanese journal of applied physics
Volume33
Issue number7
DOIs
Publication statusPublished - 1994 Jul
Externally publishedYes

Keywords

  • Optical breakdown
  • Polarization
  • SHG
  • Second harmonic generation
  • Si(111)7 × 7

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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