Title :
Focusing of different beams by short focus optics
Author_Institution :
Dept. of Transp. Commun., Ukrainian State Acad. of Railway Transp., Kharkov, Ukraine
Abstract :
In this paper, numerical methods for fast simulation of nonparaxial beam propagation are discussed. For small distances, in the near field or presence of focusing and other optical elements with high numerical aperture have to be used FFT-algorithms or calculation by rigorous expressions, e.g. eigenfunctions expansions. For long distances more effective is algorithm of correction in the space domain. In all cases of nonparaxial beam propagation when the far field distribution isn´t limited to a half space, only rigorous solutions of the wave equation are valid.
Keywords :
eigenvalues and eigenfunctions; fast Fourier transforms; laser beams; light propagation; optical focusing; FFT-algorithms; beam focusing; correction algorithm; eigenfunctions expansions; nonparaxial beam propagation; rigorous expressions calculation; short focus optics; Apertures; Convolution; Fast Fourier transforms; Fourier transforms; Frequency domain analysis; Microelectronics; Optical design; Optical devices; Optical propagation; Rail transportation;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2004. Proceedings of LFNM 2004. 6th International Conference on
Print_ISBN :
0-7803-8429-6
DOI :
10.1109/LFNM.2004.1382426
