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physics.optics2008★ 34 cited
Critical power of collapsing vortices
Gadi Fibich, Nir Gavish
We calculate the critical power for collapse of linearly-polarized phase vortices, and show that this expression is more accurate than previous results. Unlike the non-vortex case,…
physics.optics2008★ 19 cited
Simulations of the Nonlinear Helmholtz Equation: Arrest of Beam Collapse, Nonparaxial Solitons, and Counter-Propagating Beams
Guy Baruch, Gadi Fibich, Semyon V. Tsynkov
We solve the (2+1)D nonlinear Helmholtz equation (NLH) for input beams that collapse in the simpler NLS model. Thereby, we provide the first ever numerical evidence that nonparaxia…