Dark spatiotemporal optical solitary waves in self-defocusing nonlinear media
详细信息 查看全文
- 作者：Wei-Ping Zhong ; Milivoj R. Belić ; Yiqi Zhang
- 关键词：Dark spatiotemporal solitons ; Cylindrical Korteweg–de Vries equation ; Toroidal rings
- 刊名：Nonlinear Dynamics
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：87
- 期：4
- 页码：2171-2177
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Vibration, Dynamical Systems, Control; Classical Mechanics; Mechanical Engineering; Automotive Engineering;
- 出版者：Springer Netherlands
- ISSN：1573-269X
- 卷排序：87
文摘
Dark three-dimensional spatiotemporal solitons or the “dark light bullets” in the self-defocusing nonlinear media with equal diffraction and dispersion lengths are demonstrated analytically. Our results show that the main characteristic of the dark light bullets can be described by the cylindrical Korteweg–de Vries (CKdV) equation. The dark wave packets are composed of the single-layer and multilayer toroidal rings. For the multilayer rings, there exist small inner rings enclosed in a large ring-shaped toroidal structure, when one chooses different orders of the soliton solutions of the CKdV equation. The radius of dark ring solitons increases with the propagation distance. Present results provide a feasible method for controlling the fundamental structure of these beams in the self-defocusing nonlinear media.