Effects of temperature on the stability of separatescreening bright--dark spatial soliton pair
Zhang Guang-Yong(张光勇)a)b) and Liu Jin-Song(刘劲松)a)†
a State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China; b Department of Physics, China University of Geosciences, Wuhan 430074, China
Abstract We investigate theoretically the temperature effects on the evolution and stability of a separate screening bright--dark soliton pair formed in a serial non-photovoltaic photorefractive crystal circuit. Our numerical results show that, for a stable bright--dark soliton pair originally formed in a crystal circuit at given temperatures, when one crystal temperature changes, the soliton supported by the other crystal will evolve into another stable soliton if the temperature change is quite small, whereas it will become unstable and experience larger cycles of compression or break up into beam filaments if the temperature difference is big enough. The dark soliton is more sensitive to the temperature change than the bright one.
Received: 13 April 2006
Revised: 10 July 2006
Accepted manuscript online:
(Other nonlinear optical materials; photorefractive and semiconductor materials)
Fund: Project supported by the National Natural Science Foundation of China (Grant
Nos~10574051 and 10174025) and the Research Foundation for Outstanding Young
Teachers, China
University of Geosciences (Grant No CUGQNL0621).
Cite this article:
Zhang Guang-Yong(张光勇) and Liu Jin-Song(刘劲松) Effects of temperature on the stability of separatescreening bright--dark spatial soliton pair 2006 Chinese Physics 15 2631
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