Far field of binary phase gratings with errors in the height of the strips

Autor:	Luis Miguel Sanchez-Brea, José María Rico-García
Rok vydání:	2009
Předmět:	Diffraction Physics business.industry Physics::Optics Near and far field STRIPS Fraunhofer diffraction Grating law.invention symbols.namesake Optics law Blazed grating symbols Optica Materiales ópticos business Diffraction grating Fresnel diffraction Óptica
Zdroj:	E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid E-Prints Complutense. Archivo Institucional de la UCM instname
Popis:	Diffraction gratings are not always ideal but, due to the fabrication process, several errors can be produced. In this work we show that when the strips of a binary phase diffraction grating present certain randomness in their height, the intensity of the diffraction orders varies with respect to that obtained with a perfect grating. To show this, we perform an analysis of the mutual coherence function and then, the intensity distribution at the far field is obtained. In addition to the far field diffraction orders, a "halo" that surrounds the diffraction order is found, which is due to the randomness of the strips height.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f313d4ce1b3223de70d18fe33325df85 Zobrazit plný text záznamu