PT对称晶格势中涡旋光孤子  

Optical Vortex Soliton in Parity-Time Symmetric Potentials

作　　者：周博臻[1] 花春波 徐四六[1] 吕鹏[1] 

机构地区：[1]湖北科技学院电子与信息工程学院,湖北咸宁437100

出　　处：《中国激光》2015年第5期165-171,共7页Chinese Journal of Lasers

基　　金：大学生创新创业训练计划(201210927052;201310927058)

摘　　要：建立了一个零缺陷周期性,正、负缺陷非周期性三种宇称-时间(PT)对称晶格势中奇异光孤子传输的理论模型。运用变分法分析了零缺陷晶格势中孤子的宽度和势能的变化,并运用线性稳定性分析研究了孤子的稳定性范围。结果表明,在一定的参数范围内,奇异光孤子在PT晶格势中能够存在并稳定传输。A theoretical model of optical singular soliton in periodic parity-time （PT） symmetric potentials without defects and non-periodic PT symmetric potentials with positive and negative defects is introduced. Based on variational method, the width and potential energy of soliton in PT symmetric potentials without defects are analysed. The range of linear stability of soliton is also researched by linear stability analysis. It is shown that singular soliton can stably transmitte in the PT symmetric potentials under some appropriate parameters.

关 键 词：非线性光学 涡旋光孤子 PT对称晶格势 变分法 

分 类 号：O437[机械工程—光学工程]