Beam transformation in quadratic nonlinear photonic crystals

Research output: Contribution to journalConference articlepeer-review


Several methods for transforming the spatial properties of optical beams in nonlinear photonic crystals are reviewed. Successive up-conversion and down conversion a periodic 1D nonlinear photonic crystal enables to convert the fundamental Gaussian beam to a higher order Hermite Gaussian beam at the same wavelength. Nonlinear deflection over a wide spectral and temperature range is enabled by a specific two-dimensional modulation of the nonlinear coefficient. Finally, nonlinear generation of vortex beams can be achieved by specific three-dimensional modulation of the nonlinear coefficient.

Original languageEnglish
Article number70271G
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2008
Event15th International School on Quantum Electronics: Laser Physics and Applications - Bourgas, Bulgaria
Duration: 15 Sep 200819 Sep 2008


  • Hermite-Gaussian beams
  • Nonlinear optics
  • Quasi phase matching
  • Vortex beams


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