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Generation of Second-Harmonic Conical Waves via Nonlinear Bragg Diffraction Solomon M. Saltiel,1,2
 

Summary: Generation of Second-Harmonic Conical Waves via Nonlinear Bragg Diffraction
Solomon M. Saltiel,1,2
Dragomir N. Neshev,1
Robert Fischer,1
Wieslaw Krolikowski,1
Ady Arie,3
and Yuri S. Kivshar1
1
Nonlinear Physics Center and Laser Physics Center, Center for Ultra-high Bandwidth Devices for Optical Systems (CUDOS),
Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia
2
Department of Quantum Electronics, Faculty of Physics, Sofia University, Bulgaria
3
School of Electrical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
(Received 3 August 2007; published 12 March 2008)
We report on the observation of second-harmonic conical waves generated in a novel geometry of the
transverse excitation of an annular periodically poled nonlinear photonic structure by a fundamental
Gaussian beam. We show that the conical beams are formed as a result of the higher-order nonlinear Bragg
diffraction involving two parametric processes in which an ordinary fundamental wave is converted
simultaneously into ordinary and extraordinary polarized second harmonics.

  

Source: Arie, Ady - Department of Electrical Engineering-Physical Electronics, Tel Aviv University
Australian National University, Research School of Physical Sciences and Engineering, Nonlinear Physics Centre
Saltiel, Solomon - Faculty of Physics, University of Sofia

 

Collections: Engineering; Physics