Generation of second-harmonic beams with switchable curved trajectories

Sivan Trajtenberg-Mills*, Irit Juwiler, Ady Arie

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review


Beams which follow curved trajectories are useful in a variety of applications, but up to now have been realized mainly in linear media. We demonstrate theoretically and experimentally the generation of second-harmonic (SH) beams which follow arbitrary convex caustic trajectories. These beams are created in a nonlinear photonic crystal with a second-order susceptibility having a tailored pattern; hence, the SH beam follows the desired trajectory after exiting the crystal. The same crystal can incorporate more than one trajectory, enabling the nonlinear creation of bottle beams as well as beams with switchable caustic trajectories that can be controlled by the phase-matching conditions.

Original languageEnglish
Pages (from-to)153-156
Number of pages4
Issue number1
StatePublished - 20 Jan 2017


  • Computer holography
  • Harmonic generation and mixing
  • Laser beam shaping
  • Photonic crystals


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