Low-data simulation of diffractive optical elements based on the zones geometry.
- Resource Type
- Article
- Authors
- Ripoll, Olivier; Kettunen, Ville; Herzig, Hans Peter
- Source
- Journal of Modern Optics. 9/15/2002, Vol. 49 Issue 11, p1801-1809. 9p.
- Subject
- *OPTICAL diffraction
*COMPUTER simulation
- Language
- ISSN
- 0950-0340
Design and simulation of two-dimensional diffractive optical elements are often limited by the amount of data required to represent the element in the computer's memory. We present a technique based on a geometrical description of the element, which requires fewer data than the traditional pixel description. Moreover, the element is being described more accurately and consequently the pixel-related artefacts are suppressed. This technique can be used for both periodic and non-periodic structures of large dimensions under Fraunhofer or Fresnel approximations. We apply the method to analysis of far-field beam-shaping elements and discuss possible extensions and refinements of the technique. [ABSTRACT FROM AUTHOR]