Propagation of Hermite-Gaussian beams in apertured fractional Fourier transforming systems

Propagation of Hermite-Gaussian beams in apertured fractional Fourier transforming systems
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厄米高斯光束在孔径分数阶傅立叶变换系统中的传播

DOI:
10.1078/0030-4026-00301
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发表时间:
2003
期刊:
影响因子:
3.1
通讯作者:
Wei Xiaofeng
Wei Xiaofeng
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhao Daomu*;Mao Haidan;Liu Hongjie;Jing Feng;Zhu Qihua;Wei Xiaofeng

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摘要介绍了受光圈限制的分数傅里叶变换(FRFT)系统,并将其应用于厄米-高斯光束的传输。基于矩形函数可以展开为有限个复高斯函数的近似和的处理,得到了厄米-高斯光束通过有光圈FRFT系统的输出场分布的解析表达式,并与数值积分计算的结果进行了比较。结果表明,该方法能显著提高数值计算效率。
Summary The apertured fractional Fourier transform (FRFT) system is introduced and applied to treat the propagation of Hermite-Gaussian beams. Based on the treatment that a rectangular function can be expanded into a approximate sum of complex Gaussian functions with finite numbers, the analytical expressions for the output field distribution of a Hermite-Gaussian beam through an apertured FRFT system are obtained and compared with those obtained from numerically integral calculation. The results show that our method can significantly improve the numerical calculation efficiency.
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