Temporal analysis of low-amplitude screening spatial solitons due to two-photon photorefractive effect |
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| Authors: | Qichang Jiang Yanli Su Xuanmang Ji |
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| Affiliation: | 1. Maxwell Institute for Mathematical Sciences, Department of Mathematics, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom;2. Maxwell Institute for Mathematical Sciences, School of Mathematics, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom;1. Department of Engineering, Amity University Dubai, Dubai, United Arab Emirates;2. Fingerprint Department, Dubai Police, Dubai, United Arab Emirates;1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China;2. Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, PR China |
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| Abstract: | This paper investigates the temporal behavior of two-photon screening spatial solitons using a numerical technique. An expression for the time-dependent dynamical evolution is obtained. The results show that the width of bright solitons decreases monotonically to a minimum toward steady state value when the intensity ratio of the solitons is small, which is in low-amplitude regime. Within the same propagation time, the intensity width of solitons decreases with increase in soliton intensity ratio and with increase in external electric field. The formation time of solitons is independent of the intensity ratio of the solitons or the external electric field and is close to a constant determined by the dielectric relaxation time. The temporal properties of dark solitons are similar to those of the bright solitons. |
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