Saltiel, SolomonNeshev, DragomirKrolikowski, WieslawKivshar, Yuri2009-06-012010-12-202009-06-012010-12-20Optics Express 15.7 (2007): 4132-41381094-4087http://hdl.handle.net/10440/361http://digitalcollections.anu.edu.au/handle/10440/361We analyze the second-harmonic generation in two-dimensional photonic structures with radially periodic domains created by poling of a nonlinear quadratic crystal. We demonstrate that the parametric conversion of the Gaussian fundamental beam propagating along the axis of the annular structure leads to the axial emission of the second-harmonic field in the form of the radially polarized first-order Bessel beam.7 pages"OSA will grant the authors permission to deposit the publisher’s pdf from their Optics Express articles into the repository with the proper citation (reference number or journal /volume/page/year citation)." - from email received from Authorized Agent, The Optical Society, 27/05/10laser beam shapingnonlinear opticsfrequency conversion2007-04-0210.1364/OE.15.0041322015-12-08