作　　者： ; ; ; ; ; ; ;

机构地区： 中国人民解放军军械工程学院光学与电子工程系

出　　处： 《光子学报》 2009年第4期785-789,共5页

摘　　要： 以亚当姆预测-校正系统数值计算方法为基础,在同时考虑光束通过克尔介质后的相位和光束线型变化的情况下,利用惠更斯-菲涅尔衍射积分公式,对高斯光束通过克尔介质后的近场和远场的横向光强分布进行了研究.结果表明:当高斯光束通过"薄"介质的出射面时,不仅仅相位发生了变化,而且光强线型分布也不再呈理想的高斯分布,而是有一系列丝状的近高斯分布.光束通过克尔介质后,无论是在近场还是远场,其光束总能量分布都被发散了.结果同时表明:光束通过正克尔介质后的远场光强分布主要集中在中心附近,并逐渐向边缘减弱,而光束通过负克尔介质后远场光束能量主要集中在边缘. Considering phase and intensity distribution changed when Gaussian beam transmitted through the Kerr media, based on the Adams-Moulton predictor-corrector method and the Huygens-Fresnel diffraction, near-field and far-field of the light intensity distribution are investigated when a Gaussian beam transmitted through a Kerr medium, respectively. The results show that, when beam transmits to the behind of a thin sample, not only the phases have changed; also the distributions of the Gaussian beam have changed, in fact, there are a series of threadlike approximate Gaussian distribution. Both the near field and far-field, the energy distributing of the beam are been transpired. The results indicate that the light intensity distribution mostly concentrate in the center when beam transmitted through positive Kerr media, but when beam transmitted through negative Kerr media, the light intensity distribution mostly in the edge.

关 键 词： 高斯光束 克尔介质 限幅效应 亚当姆预测 校正系统

领　　域： [机械工程] [理学] [理学]