Dark solitons in nonlocal media with competing nonlinearities
نویسندگان
چکیده
Qian Kong,1,* Ming Shen,2,† Zhenyi Chen,1 Qi Wang,2 Ray-Kuang Lee,3 and Wieslaw Krolikowski4 1Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication & Information Engineering, Shanghai University, 149 Yanchang Road, Shanghai 200072, China 2Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China 3Institute of Photonics Technologies, National Tsing-Hua University, Hsinchu 300, Taiwan 4Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia (Received 30 April 2013; published 20 June 2013)
منابع مشابه
Nonlocal dark solitons under competing cubic-quintic nonlinearities.
We investigate properties of dark solitons under competing nonlocal cubic-local quintic nonlinearities. Analytical results, based on a variational approach and confirmed by direct numerical simulations, reveal the existence of a unique dark soliton solutions with their width being independent of the degree of nonlocality, due to the competing cubic-quintic nonlinearities.
متن کاملStabilization of vortex solitons by combining competing cubic-quintic nonlinearities with a finite degree of nonlocality
In contrast to an infinite degree of nonlocality, we demonstrate that vortex solitons in nonlinear media under competing self-focusing cubic and self-defocusing quintic nonlocal nonlinearities can be stabilized with a finite degree of nonlocality. Stable vortex solitons in the upper branch, bifurcated from the competing cubic-quintic nonlinearities, are found to be supported when the original d...
متن کاملStable Vortex Solitons and Robust Soliton Complexes in Optical Media with Competing Nonlinearities
An overview of recent results in the field of vortex (spinning) solitons and soliton complexes composed of several fundamental (nonspinning) solitons in twoand three-dimensional optical media with competing nonlinearities is presented. It is concluded that multidimensional solitons with intrinsic topological charge are stable provided that their internal size and power (energy) are large enough...
متن کاملStable solitons of even and odd parities supported by competing nonlocal nonlinearities.
We introduce a one-dimensional phenomenological model of a nonlocal medium featuring focusing cubic and defocusing quintic nonlocal optical nonlinearities. By means of numerical methods, we find families of solitons of two types, even-parity (fundamental) and dipole-mode (odd-parity) ones. Stability of the solitons is explored by means of computation of eigenvalues associated with modes of smal...
متن کاملObservation of attraction between dark solitons.
We demonstrate a dramatic change in the interaction forces between dark solitons in nonlocal nonlinear media. We present what we believe is the first experimental evidence of attraction of dark solitons. Our results indicate that attraction should be observable in other nonlocal systems, such as Bose-Einstein condensates with repulsive long-range interparticle interaction.
متن کامل