Media 15: Counterpropagating optical vortices in photorefractive crystals D. Jović D. Arsenović A. Strinić M. Belić M. Petrović 10.1364/OPEX.13.004379.m015 https://opticapublishing.figshare.com/articles/media/Media_15_Counterpropagating_optical_vortices_in_photorefractive_crystals/4932785 Originally published in Optics Express on 13 June 2005 (oe-13-12-4379) 2005-06-13 00:00:00 Optics Express 13 June 2005 media oe vortice photorefractive crystals Counterpropagating