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Z. Naturforsch. 67a, 581 – 588
(2012)
doi:10.5560/ZNA.2012-0056
Breathing Azimuthons in Nonlocal Nonlinear Media
1 Department of Basic Science, Zhejiang Shuren University, Hangzhou, 310015, Zhejiang, China
2 School of Physical Science and Technology, Suzhou University, Suzhou, 215006, Jiangsu, China
Received December 13, 2011 / revised May 28, 2012 / published online September 19, 2012
Reprint requests to: X.-J. L.; E-mail:
laixianjing@163.com
Two-dimensional self-similar azimuthons are introduced and investigated analytically and numerically in nonlocal nonlinear media with space-dependent diffractive, gain (attenuation) coefficient based on the similarity transformation and variational approach. We demonstrate that the azimuthons of critical power in the strongly nonlocal limit are more stable than the ones with lower nonlocality. Remarkably, these self-similar azimuthons have the azimuthal angle modulated by the distributed diffractive coefficient, apart from the beam width and intensity changing self-similarly.
Key words: Nonlocal Nonlinear Media; Self-Similar; Azimuthons.
PACS numbers: 01.55.+b; 02.30.Jr