非局域克尔介质中空间光孤子的相互作用

研究了强非局域克尔介质中光束的演化规律，通过相位分析得到了空间孤子相互作用所满足 的非局域非线性薛定谔方程的简化近似模型，并获得了双光束传输的解析解.结果表明在传 输过程中相互作用的高斯光束的相位决定于它们的输入总功率.以振幅一强一弱共同传输的 高斯光束为例进行了具体研究，得到了强光和弱光的解析式，相位分析显示弱光在相当短的 传输距离之内能产生大的相移，可以通过对强光能量的调控来实现对弱光的相位调制. 关键词： 非局域克尔介质 空间光孤子 孤子相互作用 相位调制

Interaction between optical spatial solitons in nonlocal Kerr media

In this paper, it is discussed that a pair of optical beams co propagates in no nlocal Kerr media, which is governed by the nonlocal nonlinear Schr?dinger equa tion (NNLSE). A new approximate linear model to the NNLSE is presented for the s trong nonlocal Kerr media with arbitrary response functions. An analytical solut ion in Gaussian form to the model is obtained. It is shown that the phase of eac h of the two beams is depended on the total input power. As a concrete example, th e interaction of two beams with the intensity of one of the beams much stronger than that of the other is discussed. It is found that the phase shift of the wea ker (probe) beam is very large within rather short propagating distance in the c ase of soliton, which can be controlled by modulating the input power of the str onger (pump) beam.
Keywords： nonlocal Kerr media optical spatial s oliton spatial soliton interaction phase modulation