Diffuse optical harmonic generation in SiC nanopowder films: Hunting scattered photons

S.O. Konorov, D.A. Sidorov-Biryukov, I. Bugar, J. Kovač, L. Fornarini, M. Carpanese, M. Avella, M.E. Errico, D. Chorvat Jr., J. Kovač Jr., R. Fantoni, D. Chorvat, A.M. Zheltikov

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Second- and third-harmonic generation in polymer films doped with silicon carbide nanopowders is experimentally studied in the regime of weak scattering, with the size of nanoparticles a, the elastic scattering length l, the radiation wavelength λ, and the film thickness L meeting the relations a ≪ λ ≪ l ∼ L. The strong wavelength dependence of diffuse second- and third-harmonic generation observed under these conditions indicates a significant role of scattering effects in nonlinear optical interactions in nanopowder materials, which allows diffuse harmonic generation to be controlled by varying the ratio of the characteristic size of the nanoparticles to the wavelength of the pump radiation. The contribution of scattering-delayed pump photons to diffuse third-harmonic generation in a SiC nanopowder film is visualized by measuring the third-harmonic intensity as a function of the delay time between two pump pulses.
Original languageEnglish
Pages (from-to)73 - 77
Number of pages5
JournalApplied Physics B: Lasers and Optics
Issue number1
Publication statusPublished - Jan 2004
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Konorov, S. O., Sidorov-Biryukov, D. A., Bugar, I., Kovač, J., Fornarini, L., Carpanese, M., ... Zheltikov, A. M. (2004). Diffuse optical harmonic generation in SiC nanopowder films: Hunting scattered photons. Applied Physics B: Lasers and Optics, 78(1), 73 - 77. https://doi.org/10.1007/s00340-003-1295-3