中国物理B ›› 2002, Vol. 11 ›› Issue (3): 254-259.doi: 10.1088/1009-1963/11/3/311

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Effect of temperature on the evolution of bright and dark screening-photovoltaic spatial solitons

刘劲松, 郝中华   

  1. State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2001-07-01 修回日期:2001-10-22 出版日期:2005-06-13 发布日期:2005-06-13
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 69878022).

Effect of temperature on the evolution of bright and dark screening-photovoltaic spatial solitons

Liu Jin-Song (刘劲松), Hao Zhong-Hua (郝中华)   

  1. State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2001-07-01 Revised:2001-10-22 Online:2005-06-13 Published:2005-06-13
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 69878022).

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摘要： We investigate theoretically the temperature effects on the evolution of both bright and dark screening-photovoltaic optical spatial solitons in biased photovoltaic-photorefractive crystals in the case of neglecting the diffusion process. For a stable bright or dark screening-photovoltaic soliton originally formed in a crystal at a given temperature, when the crystal temperature changes, it will evolve into another stable screening-photovoltaic soliton if the change is quite small, whereas it will become unstable or break down if the temperature change is large enough. The spatial shape of a stable screening-photovoltaic soliton can be reshaped by appropriately adjusting the crystal temperature.

Abstract: We investigate theoretically the temperature effects on the evolution of both bright and dark screening-photovoltaic optical spatial solitons in biased photovoltaic-photorefractive crystals in the case of neglecting the diffusion process. For a stable bright or dark screening-photovoltaic soliton originally formed in a crystal at a given temperature, when the crystal temperature changes, it will evolve into another stable screening-photovoltaic soliton if the change is quite small, whereas it will become unstable or break down if the temperature change is large enough. The spatial shape of a stable screening-photovoltaic soliton can be reshaped by appropriately adjusting the crystal temperature.

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

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

  • 42.65.Tg
42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials) 42.65.Hw (Phase conjugation; photorefractive and Kerr effects) 72.40.+w (Photoconduction and photovoltaic effects) 78.20.Bh (Theory, models, and numerical simulation)