SiOxC1-xN large-sized nanocrystals in the photoinduced SHG

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Abstract

Photoinduced second harmonic generation (SHG) has been revealed in SiOCN nanocrystallites incorporated into the oligoetheracrylate photopolymers. Increasing photoinducing Q-switched nitrogen laser pulses (λ=337nm) leads to an increase of the SHG signal. The SHG achieves its maximum at pump photon flux of about 1.83GW/cm2. The maximum photoinduced SHG is achieved for C/N ratio of about 0.92 and is equal to (3.82±0.11) pm/V. Optimal concentration of the embedded SiOCN nanopowders lies between 4.2% and 6.3%. Decreasing temperature favours increase of the SHG. Substantial contribution of nanocrystallite interfaces is expected in observed nonlinear optical phenomena.

Original languageEnglish (US)
Pages (from-to)269-274
Number of pages6
JournalOptical Materials
Volume19
Issue number2
DOIs
StatePublished - Apr 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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