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

✍ Scribed by Daomu Zhao; Haidan Mao; Hongjie Liu; Shaomin Wang; Feng Jing; Xiaofeng Wei

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 345 KB
• Volume: 236
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2004.03.047

✦ Synopsis

The apertured fractional Fourier transform (FRFT) system is introduced and applied to treat the propagation of Hermite-cosh-Gaussian beams. Based on the fact that a hard aperture function can be expanded into a finite sum of complex Gaussian functions, the approximate analytical expressions for the output field distribution of a Hermite-cosh-Gaussian beam through apertured FRFT systems are derived and compared with those obtained from diffraction integral formulae by numerical simulations. It is shown that our method can significantly improve the numerical calculation efficiency.