强非局域非线性介质中复宗量厄米高斯光束的传输  

Propagation of Elegant Hermite-Gaussian Beams in Strongly Nonlocal Nonlinear Media

作　　者：张霞萍[1] 

机构地区：[1]南京晓庄学院物理系,江苏南京210017

出　　处：《光学学报》2011年第11期241-246,共6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

摘　　要：利用Snyder-Mitchell模型讨论了笛卡儿坐标系下(1+1)维和(1+2)维光束的传输过程,得到了强非局域非线性介质中传输光束的复宗量厄米高斯型解。该解为抛物线柱函数对高斯光束的调制。给出了复宗量厄米高斯光束共线传输情况。在一定条件下共线传输的复宗量厄米高斯型光束演化为涡旋光束。给出了单束复宗量和涡旋复宗量厄米高斯光束在临界功率下的传输过程,发现它们在传输过程中光束截面和光斑尺寸呈现周期性的呼吸变化,即为呼吸子或旋转涡旋呼吸子。Based on the Snyder-Mitchell model that describes the paraxial beam propagating m strongly nonlocal nonlinear media and the trial solution with modulating the Gaussian beam by the parabolic cylinder functions, the close forms of elegant Hermite-Gaussian beams （EHGB） are accessed in Cartesian coordinate system. The collinear EHGB will evolve to be the rotating charge vortex EHGB on certain condition. It is shown that the transferring of the single EHGB and the rotating charge vortex EHGB at the critical power. The widths of the profiles of the breathers and the rotating charge vortex breathers are varied periodically in the transferring.

关 键 词：非线性光学 强非局域非线性介质 复宗量厄米高斯光束 旋转涡旋呼吸子 

分 类 号：O439[机械工程—光学工程]