Journal
PHYSICAL REVIEW A
Volume 83, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.83.043833
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Funding
- Natural Science Foundation of Guangdong Province [1015283001000000]
- Qatar National Research Foundation [NPRP 25-6-7-2, NPRP 09-462-1-074]
- Air Force Office of Scientific Research, Air Force Material Command, USAF [FA-8655-10-1-3010]
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We report solutions for expanding dipole-type optical solitary waves in two-dimensional Kerr media with the self-focusing nonlinearity, using exact analytical (Hirota) and numerical methods. Such localized beams carry intrinsic vorticity and exhibit symmetric shapes for both scalar and vector solitary modes. When vector beams are close to the scalar limit, simulations demonstrate their stability over propagation distances exceeding 50 diffraction lengths. In fact, the continuous expansion helps the vortical beams avoid the instability against the splitting, collapse, or decay, making them convectively stable patterns.
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