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000148477 001__ 148477 000148477 005__ 20250117162507.0 000148477 0247_ $$2doi$$a10.1016/j.optlaseng.2024.108694 000148477 0248_ $$2sideral$$a141047 000148477 037__ $$aART-2025-141047 000148477 041__ $$aeng 000148477 100__ $$0(orcid)0000-0001-7930-272X$$aLobera, J.$$uUniversidad de Zaragoza 000148477 245__ $$aDouble spiral phase filter digital in-line holography for particle field recording and tracking 000148477 260__ $$c2025 000148477 5060_ $$aAccess copy available to the general public$$fUnrestricted 000148477 5203_ $$aThe application of digital in-line holography in fluid velocimetry is mainly limited by the twin image that hinders the particle position and velocity measurements. In this work, we propose the use of two spiral phase filters in a digital in-line holography configuration to discriminate the real and virtual images. The first filter is a physical plate that modifies the object spectrum prior the recording. The second filter is a numerical frequency filter, applied in the reconstruction process, which reshape one of the particle images into a point-like image while blurs its twin image. In this way, particle tracking algorithms, based on the detection of intensity peaks, can easily locate and track particles. The good performance of double spiral phase filter in-line holography for particle field recording and particle tracking has been demonstrated experimentally in the present work. 000148477 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2023-146648NB-C22$$9info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2020-113303GB-C22 000148477 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/ 000148477 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000148477 700__ $$0(orcid)0000-0002-8451-0942$$aLópez Torres, A. M.$$uUniversidad de Zaragoza 000148477 700__ $$0(orcid)0000-0003-2639-3562$$aAndrés, N.$$uUniversidad de Zaragoza 000148477 700__ $$0(orcid)0000-0003-3178-5253$$aTorcal-Milla, F. J.$$uUniversidad de Zaragoza 000148477 700__ $$0(orcid)0000-0003-1183-7052$$aRoche, E. M.$$uUniversidad de Zaragoza 000148477 700__ $$0(orcid)0000-0003-1955-6714$$aPalero, V.$$uUniversidad de Zaragoza 000148477 7102_ $$12002$$2385$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Física Aplicada 000148477 7102_ $$15008$$2800$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Teoría Señal y Comunicac. 000148477 773__ $$g184, 2 (2025), 108694 [8 pp.]$$pOpt. lasers eng.$$tOptics and Lasers in Engineering$$x0143-8166 000148477 8564_ $$s2971358$$uhttps://zaguan.unizar.es/record/148477/files/texto_completo.pdf$$yVersión publicada 000148477 8564_ $$s2696653$$uhttps://zaguan.unizar.es/record/148477/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000148477 909CO $$ooai:zaguan.unizar.es:148477$$particulos$$pdriver 000148477 951__ $$a2025-01-17-14:36:33 000148477 980__ $$aARTICLE
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