129945 20240116090136.0 doi 10.1016/j.optlaseng.2020.106280 sideral 118606 ART-2020-118606 eng Lobera, Julia Universidad de Zaragoza (orcid)0000-0001-7930-272X Tilted illumination in-line holographic velocimetry: Improvements in the axial spatial resolution 2020 Two are the main limitations of in-line holography: the twin image problem and the poor spatial resolution in the optical axis direction. The twin image problem can be solved with the introduction of an imaging lens and a knife-edge aperture located at its focal plane. In this work, a theoretical analysis of the axial resolution with and without aperture is provided from the perspective of the Optical Diffraction Tomography. Theoretical analysis and controlled experiments with the different recording options, demonstrate that a small tilt of the illumination beam, together with a centered rectangular aperture, is a key parameter as it improves the spatial resolution along the optical axis during the location and tracking of a particle field. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-17R info:eu-repo/grantAgreement/ES/MINECO/BES-2017-080924 info:eu-repo/grantAgreement/ES/MINECO/DPI2016-75791-C2-2-P/1-P info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.836 2020 OPTICS 13 / 99 = 0.131 2020 Q1 T1 1.143 2020 Atomic and Molecular Physics, and Optics 2020 Q1 Mechanical Engineering 2020 Q1 Electronic, Optical and Magnetic Materials 2020 Q1 Electrical and Electronic Engineering 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Palero, Virginia Universidad de Zaragoza (orcid)0000-0003-1955-6714 Roche, Eva (orcid)0000-0003-1183-7052 Gómez Climente, Marina Universidad de Zaragoza (orcid)0000-0002-2930-7431 López Torres, Ana M. Universidad de Zaragoza (orcid)0000-0002-8451-0942 Andrés, Nieves Universidad de Zaragoza (orcid)0000-0003-2639-3562 Arroyo, M. Pilar Universidad de Zaragoza (orcid)0000-0001-5935-897X 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 5008 800 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Teoría Señal y Comunicac. 134 (2020), 106280 [8 pp.] Opt. lasers eng. Optics and Lasers in Engineering 0143-8166 1757404 http://zaguan.unizar.es/record/129945/files/texto_completo.pdf Postprint 2141674 http://zaguan.unizar.es/record/129945/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:129945 articulos driver 2024-01-16-08:24:34 ARTICLE