Roux, FS2014-01-242014-01-242013-10Roux FS. 2013. How to distinguish between the annihilation and the creation of optical vortices. Optics letters, vol. 38(19), 3895-38980146-9592http://hdl.handle.net/10204/7180Copyright: Optical Society of America. This is an OA journal. The journal authorizes the publication of the information herewith contained. Published in Optics letters, vol. 38(19), 3895-3898Optical vortices are always created or annihilated as vortex dipoles — pairs with opposite topological charge. Here a quantity, consisting of the transverse first and second derivatives of the optical field, is derived with which one can distinguish between vortex dipole annihilation and creation events. Analytical and numerical examples are provided as demonstration of the method.enGaussian beamsOpticsOptical vorticesArticleRoux, F. (2013). How to distinguish between the annihilation and the creation of optical vortices. http://hdl.handle.net/10204/7180Roux, FS "How to distinguish between the annihilation and the creation of optical vortices." (2013) http://hdl.handle.net/10204/7180Roux F. How to distinguish between the annihilation and the creation of optical vortices. 2013; http://hdl.handle.net/10204/7180.TY - Article AU - Roux, FS AB - Optical vortices are always created or annihilated as vortex dipoles — pairs with opposite topological charge. Here a quantity, consisting of the transverse first and second derivatives of the optical field, is derived with which one can distinguish between vortex dipole annihilation and creation events. Analytical and numerical examples are provided as demonstration of the method. DA - 2013-10 DB - ResearchSpace DP - CSIR KW - Gaussian beams KW - Optics KW - Optical vortices LK - https://researchspace.csir.co.za PY - 2013 SM - 0146-9592 T1 - How to distinguish between the annihilation and the creation of optical vortices TI - How to distinguish between the annihilation and the creation of optical vortices UR - http://hdl.handle.net/10204/7180 ER -