摘要
利用二维快速傅里叶变换算法研究了高功率激光在线性介质中传输形成低频调制的特性，根据这些调制特性给出了线性介质中Ｆｒｅｓｎｅｌ数的定义，并得到了线性介质中衍射调制环数跟Ｆｒｅｓｎｅｌ数的变化关系。
The modulation diffraction rings of a intense laser beam propagation in linear medium is investigated numerically by a two-dimensional fast Fourier transformation algorithm. The definition for Fresnal number in linear mediums is given on the basis of the properties of the diffraction rings land the relationship between the number of diffraction rings and Fresnal number is obtained.
出处
《衡阳师范学院学报》
2000年第6期44-48,共5页
Journal of Hengyang Normal University
