000117423 001__ 117423
000117423 005__ 20240319080956.0
000117423 0247_ $$2doi$$a10.1016/j.ijleo.2021.168326
000117423 0248_ $$2sideral$$a128251
000117423 037__ $$aART-2022-128251
000117423 041__ $$aeng
000117423 100__ $$0(orcid)0000-0003-3178-5253$$aTorcal-Milla, Francisco Jose$$uUniversidad de Zaragoza
000117423 245__ $$aNear field diffraction of steel tape gratings illuminated with finite-size incoherent sources
000117423 260__ $$c2022
000117423 5060_ $$aAccess copy available to the general public$$fUnrestricted
000117423 5203_ $$aSteel tape gratings are diffraction gratings engraved on a steel substrate, whose slits are commonly manufactured by laser ablation. They behave as amplitude diffraction gratings, since the engraved slits act as strong scatters. Here, we extend previous works to the case of finite-size illumination sources, as they are used in applications such as optical encoders, where LEDs are commonly used as illumination sources. We obtain an analytical formulation for the near field behavior of this kind of gratings. When the light source increases its size, a decreasing in the contrast of the self-images is added to the effect of the surficial roughness. The agreement between analytical and numerical results is high, validating the obtained formulation. Besides, these results could be crucial in metrological applications in which steel tape gratings or other diffractive optical elements engraved on steel substrates are used, providing with a theoretical formalism to analyze the near field propagation of light after reflecting in them.
000117423 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000117423 590__ $$a3.1$$b2022
000117423 592__ $$a0.539$$b2022
000117423 591__ $$aOPTICS$$b41 / 99 = 0.414$$c2022$$dQ2$$eT2
000117423 593__ $$aAtomic and Molecular Physics, and Optics$$c2022$$dQ2
000117423 593__ $$aElectronic, Optical and Magnetic Materials$$c2022$$dQ2
000117423 593__ $$aElectrical and Electronic Engineering$$c2022$$dQ2
000117423 594__ $$a5.7$$b2022
000117423 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000117423 700__ $$aMiguel Sanchez-Brea, Luis
000117423 7102_ $$12002$$2385$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Física Aplicada
000117423 773__ $$g251, 168326 (2022), [9 pp]$$pOptik$$tOptik$$x0030-4026
000117423 8564_ $$s2666814$$uhttps://zaguan.unizar.es/record/117423/files/texto_completo.pdf$$yVersión publicada
000117423 8564_ $$s2145524$$uhttps://zaguan.unizar.es/record/117423/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000117423 909CO $$ooai:zaguan.unizar.es:117423$$particulos$$pdriver
000117423 951__ $$a2024-03-18-13:36:30
000117423 980__ $$aARTICLE