Author Affiliations
Abstract
Department of Physics, Ludong University, Yantai 264025
The limitation of paraxial condition of paraboloid refracting system in performing fractional Fourier transform acts like an aperture, which makes the system different from ideal systems. With aperture expanded as the sum of finite complex Gaussian terms, a more practical approximate analytical solution of fractional Fourier transform of Gaussian beam in an apertured paraboloid refracting system is obtained and also numerical investigation is presented. Complicated and practical fractional Fourier transform systems can be constructed by cascading several apertured paraboloid refracting systems which are the simplest and the most basic units for performing more precise transform.
傅里叶光学 抛物面折射系统 分数傅里叶变换 孔径 近轴条件 070.2590 ABCD transforms 050.1220 Apertures 120.4820 Optical systems 140.3300 Laser beam shaping Chinese Optics Letters
2007, 5(1): 18