Generation of Second-Harmonic Bessel Beams by Transverse Phase-Matching in Annular Periodically Poled Structures
| Autor: | Solomon M. Saltiel, Wieslaw Krolikowski, Robert Fischer, Yuri S. Kivshar, Dragomir N. Neshev, Ady Arie |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Diffraction
Materials science Physics and Astronomy (miscellaneous) business.industry General Engineering Physics::Optics General Physics and Astronomy Bragg's law Nonlinear optics Superposition principle chemistry.chemical_compound symbols.namesake Optics chemistry Lithium tantalate symbols Harmonic High harmonic generation business Bessel function |
| Zdroj: | Japanese Journal of Applied Physics. 47:6777-6783 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.1143/jjap.47.6777 |
| Popis: | We demonstrate experimentally the generation of second-harmonic conical waves via parametric frequency doubling in a two-dimensional annular periodically poled nonlinear photonic structure fabricated in a stoichiometric lithium tantalate crystal. We apply the concept of nonlinear Bragg diffraction for explaining this effect, and show theoretically that in low-symmetry crystals this process results in generated second-harmonic waves being a superposition of the Bessel beams. |
| Databáze: | OpenAIRE |
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