121221 20240319081022.0 doi 10.1016/j.ijleo.2022.170119 sideral 131729 ART-2022-131729 eng Torcal-Milla, Francisco Jose Universidad de Zaragoza (orcid)0000-0003-3178-5253 Design and numerical analysis of metallic Ronchi diffraction gratings acting as reflective beam-splitter 2022 Access copy available to the general public Unrestricted Objective In this work, a reflective beam-splitter based on a metallic Ronchi diffraction grating normally illuminated is designed and analysed. This kind of beam-splitter could have potential applications in photonics and optical technologies in which robustness is necessary since it may be manufactured over malleable metallic substrates. Methods The main idea under the design is as simple as obligating the zero-th diffraction order to be null. Firstly, scalar approach is performed, showing an approximation to the parameters of the grating necessary to cancel zero-th diffraction order. After that, a more rigorous approach such as Rigorous Coupled Waves Analysis (TE and TM polarization) is used to evaluate the proposed diffraction gratings as reflective beam-splitters. Results Beam-splitting is demonstrated for TE and TM polarization with slightly different dimensional parameters of the diffraction grating. Besides, we show how physical height of the grating grooves that allows cancelling zero-th diffraction order for a certain illumination wavelength depends on the metals used to manufacture the grating and its period. The dependence of the grooves height on the period is exponentially decreasing. To complete the analysis, we demonstrate how for a given grating period, the grooves height also depends on the illumination wavelength. info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-20R info:eu-repo/grantAgreement/ES/MINECO/PID2019-105918GB-I00 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.1 2022 OPTICS 41 / 99 = 0.414 2022 Q2 T2 0.539 2022 Atomic and Molecular Physics, and Optics 2022 Q2 Electronic, Optical and Magnetic Materials 2022 Q2 Electrical and Electronic Engineering 2022 Q2 5.7 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sanchez-Brea, Luis Miguel 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 271 (2022), 170119 [9 pp.] Optik Optik 0030-4026 4928479 http://zaguan.unizar.es/record/121221/files/texto_completo.pdf Versión publicada 2004659 http://zaguan.unizar.es/record/121221/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:121221 articulos driver 2024-03-18-16:19:48 ARTICLE