| 强非局域自散焦介质中傍轴高斯光束的传输特性 |
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| 引用本文： | 王形华,刘孟连.强非局域自散焦介质中傍轴高斯光束的传输特性[J].赣南师范学院学报,2005,26(6):7-9. |
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| 作者姓名： | 王形华 刘孟连 |
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| 作者单位： | 1. 赣南师范学院,物理与电子信息科学系;赣南师范学院,应用物理研究所,江西,赣州,341000
2. 赣南师范学院,物理与电子信息科学系 |
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| 摘 要： | 依据非局域非线性薛定谔方程和强非局域非线性自散焦介质的特性,通过对强非局域非线性自散焦介质的响应函数作两次泰勒展开,使非局域非线性薛定谔方程近似简化为一个线性方程,并由此来研究1+2维傍轴高斯光束在强非局域非线性自散焦介质中的传输特性,得到了光束各参量的演化方程和束宽的演化规律.其结果表明:在强非局域非线性自散焦介质中,傍轴高斯光束的束宽随传输距离将不断展宽,不能形成空间孤子.
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| 关 键 词： | 非线性光学 强非局域自散焦介质 傍轴高斯光束 参量演化方程 束宽演化规律 |
| 文章编号： | 1004-8332（2005）06-0007-03 |
| 收稿时间： | 2005-08-26 |
| 修稿时间： | 2005年8月26日 |
Analysis of Paraxial Gaussian Beam Propagation Properties in Strongly Nonlocal Self-defocusing Media |
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| WANG Xing-hua,LIU Meng-lian.Analysis of Paraxial Gaussian Beam Propagation Properties in Strongly Nonlocal Self-defocusing Media[J].Journal of Gannan Teachers' College(Social Science(2)),2005,26(6):7-9. |
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| Authors: | WANG Xing-hua LIU Meng-lian |
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| Institution: | 1. Department of Physics and Electronic Information Science, Gannan Teachers College; 2. Institute of Applied Physics, Gannan Teachers College, Ganzhou 341000, China |
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| Abstract: | Based on the properties of nonlocal nonlinear Schrodinger equation and stronly nonlocal nonlinear self-defoused media,this paper expands the response function to the second order Talor series,simplifies the Schrodinger equation a linear equation approximately,in terms of the equation,discuss the properties of the 1+2 dimensions paraxial in strongly nonlocal nonlinear self-defoused media,in the strongly nonlocal nonlinear,to obtain a set of evolution equation of all parameters and evolution law of beam width,the result shows that in strongly nonlocal nonlinear self-defoused media,the beam width of paraxial Gaussian beam will be broadening with the transmission distance,so it can't become the soliton. |
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| Keywords: | nonlinear optics strongly nonlocal self-defocusing media paraxial Gaussian beam parameters evolution equation beam width evolution law |
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