激光技术2011，Vol.35Issue(1)：89-93,5.DOI:10.3969/j.issn.1001-3806.2011.01.025
分析组合型余弦光栅的衍射场
Diffraction fields of combined cosine-gratings
摘要
Abstract
In order to analyze diffraction fields of combined cosine-gratings, considering the influence of the limited aperture of the gratings, the elements of the diffraction fields of the combined cosine-gratings were obtained and the corresponding integral expressions of the diffraction fields were derived based on the method of wavefront phase-factors. Then the formulae of the amplitude distribution of diffraction fields were deduced. Finally the amplitude and intensity distribution along the axis, the transverse line-width and axial line-width of that real focal-spot were obtained. This study may further provide a theoretical foundation for the application of combined cosine-gratings in filtering and optical signal processing.关键词
衍射与光栅/组合型余弦光栅/波前相因子判断法/衍射场Key words
diffraction and gratings/combination cosine-grating/ wavefront phase-factor/ diffraction fields分类
数理科学引用本文复制引用
刘有菊..分析组合型余弦光栅的衍射场[J].激光技术,2011,35(1):89-93,5.
