Second-harmonic generation in polymer films doped with silicon carbide nanocrystals with typical sizes of 10-80 nm is experimentally studied. A substantial enhancement of second-harmonic generation was achieved by decreasing the wavelength of femtosecond pump pulses, produced by an optical parametric amplifier. This strong pump-wavelength dependence of diffuse second-harmonic generation indicates a significant role of scattering effects in nonlinear-optical interactions in nanopowder materials, suggesting strategies for a radical enhancement of second-harmonic generation in nanopowders by tuning the relation between the film thickness and the elastic-scattering length of photons.
|Pages (from-to)||861 - 864|
|Number of pages||4|
|Publication status||Published - Jun 2004|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Industrial and Manufacturing Engineering
Sidorov-Biryukov, D. A., Konorov, S. O., Bugar, I., Kovac, J., Fornarini, L., Carpanese, M., ... Zheltikov, A. M. (2004). Pump-wavelength-dependent second-harmonic generation in SiC-nanopowder-doped polymer films. Laser Physics, 14(6), 861 - 864.