Temporal behavior of spatial solitons in centrosymmetric photorefractive crystals

✍ Scribed by Kaiyun Zhan; Chunfeng Hou; Shaozhi Pu

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 497 KB
• Volume: 43
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/j.optlastec.2011.03.022

✦ Synopsis

We investigate theoretically the time behavior of spatial solitons in biased centrosymmetric photorefractive crystals. A one-dimensional time-dependent wave propagation equation in biased centrosymmetric photorefractive crystals is presented. It is shown that the bright solitons exist in both quasisteady-state and steady-state regimes for high saturation values. When the intensity ratio is smaller than unity, the bright soliton width decreases monotonically to a minimum value toward steady state. Moreover, the time-dependent nonlinear wave equation exhibits only steady-state screening dark spatial solitons.