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

Ken Nakamura, Shingo Ichimura, Hazime Shimizu

Research output: Contribution to journalArticle

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 Jan 1
Externally publishedYes

Fingerprint

Low energy electron diffraction
Harmonic generation
Laser beams
YAG lasers
harmonic generations
breakdown
Irradiation
Lasers
periodic variations
electron diffraction
laser beams
beam leads
harmonics
irradiation
Pumps
Polarization
energy
disorders
pumps
deviation

Keywords

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

ASJC Scopus subject areas

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

Cite this

Effect of optical breakdown on second harmonic generation from Si(111)7 × 7 with Nd : YAG laser. / Nakamura, Ken; Ichimura, Shingo; Shimizu, Hazime.

In: Japanese Journal of Applied Physics, Vol. 33, No. 7, 01.01.1994, p. L1035-L1037.

Research output: Contribution to journalArticle

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