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arXiv 1503.07683nlin.PSmath-phmath.MPphysics.optics
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哈密顿公式在非线性光包络传输中的应用

Application of the Hamiltonian formulation to nonlinear light-envelope propagations

Guo Liang, Qi Guo, Yingbing Li, Zhanmei Ren

摘要:

基于我们最近发现的新的Hamilton正则方程,提出了一种新的方法来解析地获得非局部非线性薛定谔方程(NNLSE)的近似解.得到了NNLSE的近似解析孤子解,并对孤子的稳定性进行了简单的解析分析,与文献中的结果一致。对于非局域非线性介质中传播的单光包络,利用NNLSE模型可以构造出系统的哈密顿量,即广义动能与广义势之和.广义势的极值点对应于NNLSE的孤子解。当广义势具有最小值时,孤子是稳定的,反之则是不稳定的。此外,在响应函数具有偶对称性的前提下,给出了NNLSE与Euler-Lagrange方程等价性的严格证明。

英文摘要:

A new approach, which is based on the new canonical equations of Hamilton found by us recently, is presented to analytically obtain the approximate solution of the nonlocal nonlinear Schrödinger equation (NNLSE). The approximate analytical soliton solution of the NNLSE can be obtained, and the stability of the soliton can be analytically analysed in the simple way as well, all of which are consistent with the results published earlier. For the single light-envelope propagated in nonlocal nonlinear media modeled by the NNLSE, the Hamiltonian of the system can be constructed, which is the sum of the generalized kinetic energy and the generalized potential. The extreme point of the generalized potential corresponds to the soliton solution of the NNLSE. The soliton is stable when the generalized potential has the minimum, and unstable otherwise. In addition, the rigorous proof of the equivalency between the NNLSE and the Euler-Lagrange equation is given on the premise of the response function with even symmetry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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