Abstract
We report on the observation of multiple third-harmonic conical waves generated in an annular periodically poled nonlinear photonic crystal. We show that the conical beams are formed as a result of the cascading effect involving two parametric processes that satisfy either the transverse and/or longitudinal phase-patching conditions. This is the first experimental observation of third-harmonic generation based on nonlinear Raman-Nath diffraction.
| Original language | English |
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| Pages (from-to) | 3266-3268 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 36 |
| Issue number | 16 |
| DOIs | |
| State | Published - 15 Aug 2011 |
| Externally published | Yes |