摘要
利用强非局域非线性介质中傍轴光束传输的修正Snyder-Mitchell模型讨论了两束共线(即光束中心和传输方向都相同)拉盖尔-高斯型光孤子(CLGS)构成的涡旋光孤子传输过程。在一定条件下,涡旋光束在传输过程中,光束截面光斑发生旋转现象,但光束的束宽保持不变,称之为旋转涡旋光孤子。涡旋光孤子旋转的现象可以通过叠加光场中的古依相位来解释。结果展现了几个旋转涡旋光孤子在传输过程中的旋转现象和强非局域介质中多环形旋转涡旋光孤子的传输。
Based on the modified Snyder-Mitchell model the transmission of the optical vortex soliton that is produced by two collinear Laguerre-Gaussian solitons （CLGS） in strongly nonlocal nonlinear media is studied. Under certain condition, the profiles of the optical vortex solitons will rotate in transmiting with the beam width unvarying, which are named rotating vortex solitons, and can be explained by the Gouy phase in superposed light field. A few rotating vortex solitons are shown and the many-ring rotating vortex solitons are accessed in strongly nonlocal nonlinear media.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2012年第9期206-210,共5页
Acta Optica Sinica
基金
江苏省高等学校自然科学基础研究基金(10KJD140004)资助课题
