Solitons with Periodic Behavior in an SBN：75 Photorefractive Crystat

• Published in: Chinese physics letters Vol. 27; no. 8; pp. 96 - 98
• Main Author: 郭庆林 邓桂英 梁宝来 李盼来 李彦 李旭
• Format: Journal Article
• Language: English
• Published: 2010
• Subjects: 光折变晶体; 准稳态; 周期; 激光束; 电场电压; 空间孤子; 行为; 输出光束
• ISSN: 0256-307X

We study the formation of spatial solitons in an SBN： 75 photorefractive crystal by a 532 nm continuous-wave laser beam. The output beam from the crystal cannot be compressed proportionally to the voltage of the applied electric field. Quasi-steady-state spatial solitons are formed instantaneously at a voltage of 900 V. Interestingly, the quasi- steady-state solitons exhibit a periodic behavior consisting of formation/broken/reformation cycles. If we increase the input intensity of the soliton beam but keep the same signal-to-background intensity ratio, the solitons stay for a longer time in the quasi-steady state and a longer period of soliton formation/broken/reformation cycle is also observed.