中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2631-2637.doi: 10.1088/1009-1963/15/11/029

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Effects of temperature on the stability of separatescreening bright--dark spatial soliton pair

刘劲松1, 张光勇2   

  1. (1)State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (2)State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China;Department of Physics, China University of Geosciences,Wuhan 430074
  • 收稿日期:2006-04-13 修回日期:2006-07-10 出版日期:2006-11-20 发布日期:2006-11-20
  • 基金资助:
    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).

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)†   

  1. 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
  • Received:2006-04-13 Revised:2006-07-10 Online:2006-11-20 Published:2006-11-20
  • Supported by:
    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).

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摘要： 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.

关键词: nonlinear optics, spatial optical solitons, photorefractive effects, soliton pair

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.

Key words: nonlinear optics, spatial optical solitons, photorefractive effects, soliton pair

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.65.Hw (Phase conjugation; photorefractive and Kerr effects) 42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials)