Abstract The self-deflection of a bright solitary beam can be controlled by a dark solitary beam via a parametric coupling effect between the bright and dark solitary beams in a separate bright－dark spatial soliton pair supported by an unbiased series photorefractive crystal circuit. The spatial shift of the bright solitary beam centre as a function of the input intensity of the dark solitary beam () is investigated by taking into account the higher-order space charge field in the dynamics of the bright solitary beam via both numerical and perturbation methods under steady-state conditions. The deflection amount (), defined as the value of the spatial shift at the output surface of the crystal, is a monotonic and nonlinear function of . When is weak or strong enough, is, in fact, unchanged with , whereas increases or decreases monotonically with in a middle range of . The corresponding variation range () depends strongly on the value of the input intensity of the bright solitary beam (r). There are some peak and valley values in the curve of versus r under some conditions. When increases, the bright solitary beam can scan toward both the direction same as and opposite to the crystal's c-axis. Whether the direction is the same as or opposite to the c-axis depends on the parameter values and configuration of the crystal circuit, as well as the value of . Some potential applications are discussed.
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10174025) and the Key Project Foundation of the Education Ministry of China (Grant No 01118).
Cite this article:
Liu Jin-Song (刘劲松), Hao Zhong-Hua (郝中华) Self-deflection of a bright soliton in a separate bright－dark spatial soliton pair based on a higher-order space charge field 2003 Chinese Physics 12 1124
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
