Dynamic Control of Collapse in a Vortex Airy Beam
  We study the self-focusing dynamics and collapse of vortex Airy optical beams in a Kerr medium. The collapse is suppressed compared to a non- vortex Airy beam in a Kerr medium as a result of the existence of vortex fields. The locations of collapse depend sensitively on the initial power, vortex order, and modulation parameters. Unlike the collapses reported before for any beam, the collapse may occur in a position where the initial field is nearly zero while no collapse appears in the region where the initial field is mainly distributed. This study sheds light on how to control and manipulate the location of collapse based on the initial power, vortex order and modulation parameter. 
Rui-Pin Chen, Khian-Hooi Chew, Sailing He
physics.optics