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高斯光束的折射与传播

发表时间:2014-02-15  浏览量:1866  下载量:801
全部作者: 张秋长,陈萍,郑丹阳
作者单位: 厦门大学嘉庚学院信息科学与技术学院
摘 要: 在傍轴近似条件下,通过菲涅耳-基尔霍夫衍射式推导得到高斯光束折射入不同折射率介质中的传播表达式,并给出了数值计算结果。分析表明:高斯激光束(TEM00模)斜入射到不同折射率介质中后变成椭圆高斯光束,与入射面垂直方向的束腰半径参数保持不变,与入射面平行的束腰半径参数发生改变,不同方向束腰偏移量不同导致束腰位置在空间分离。
关 键 词: 光学;衍射;高斯光束;标量场;衍射理论
Title: Refraction of the Gaussian beam and its propagation
Author: ZHANG Qiuchang, CHEN Ping, ZHENG Danyang
Organization: College of Information Science & Technology, Xiamen University Tan Kah Kee College
Abstract: An analytical expression of the refracted field of a Gaussian beam obliquely incident on a planar interface is derived on the basis of the Fresnel-Kirchhoff diffraction integral and under paraxial approximation. Numerical analysis shows that, while a TEM00 Gaussian beam propagates obliquely through a planar interface between materials of mismatched refractive indices, the refracted beam is an elliptical Gaussian beam. The beam waist radius in the direction perpendicular to the incident plane keeps unchanged while the one in the direction within the incident plane is different from that of the incident beam and their locations shift differently, which leads to a separation in space.
Key words: optics; diffraction; Gaussian beam; scalar filed; diffraction theory
发表期数: 2014年2月第3期
引用格式: 张秋长,陈萍,郑丹阳. 高斯光束的折射与传播[J]. 中国科技论文在线精品论文,2014,7(3):211-218.
 
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