Diffraction of a Gaussian beam by a four-sector binary grating with a shift between adjacent sectors

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• 作者：Lj. Janicijevic^a ; S. Topuzoski^a ; ^{suzana_topuzoski@yahoo.com} ; L. Stoyanov^b ; A. Dreischuh^b
• 关键词：Diffraction ; Diffractive optical element ; Gaussian laser beam ; Four-sector binary grating
• 刊名：Optics Communications
• 出版年：2017
• 出版时间：15 April 2017
• 年：2017
• 卷：389
• 期：Complete
• 页码：203-211
• 全文大小：1093 K
• 卷排序：389

文摘

A diffraction of a Gaussian beam by a four-sectorial binary grating is investigated. The angular sectors consist of parts of a binary rectilinear grating. The theoretically derived diffracted wave field is supported by experimental results. Higher diffraction orders are similar to cosine-LG(n=0,l=2) beam in the far field. The central dark spot of the higher diffraction orders is nonvortex.