Azimuthons in nonlocal nonlinear media.
Azimuthons in nonlocal nonlinear media.
复制标题
DOI：
10.1364/oe.14.007903
复制
发表时间：
2006-08
期刊：
影响因子：
3.8
通讯作者：
S. López-Aguayo;A. Desyatnikov;Y. Kivshar
中科院分区：
文献类型：
--
作者：
S. López-Aguayo;A. Desyatnikov;Y. Kivshar
我们证明，空间非局域响应提供了一个有效的物理机制，稳定最近推出的方位调制自陷旋转奇异光束或方位角[见A。S. Desyatnikov，A. A. Sukhorukov和Yu。S. Kivshar，Phys. Rev. Lett. 95，203904（2005）]。我们发现，当非定域性参数超过一定的阈值时，稳定的方位角是可能的，与局域介质形成鲜明对比的是，当N < 2m时，也可以存在N个峰值的方位角，其中m是方位角拓扑荷。
We demonstrate that spatial nonlocal response provides an effective physical mechanism for stabilization of recently introduced azimuthally modulated self-trapped rotating singular optical beams or azimuthons [see A. S. Desyatnikov, A. A. Sukhorukov, and Yu. S. Kivshar, Phys. Rev. Lett. 95, 203904 (2005)]. We find that stable azimuthons become possible when the nonlocality parameter exceeds a certain threshold value and, in a sharp contrast to local media, the azimuthons with N peaks can also exist for N < 2m, where m is the azimuthon topological charge.