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oai:docta.ucm.es:20.500.14352/512022023-08-27T22:47:19Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Sánchez Brea, Luis Miguel author Alonso Fernández, José author Bernabeu Martínez, Eusebio author 2004-06-01 When a polychromatic light illuminates a grating, an achromatic and continuous self-imaging regime is produced, what means that Talbot planes are eliminated. In this work, we investigate the existence of this continuous regime for generalized grating imaging. We have found that amplitude gratings with sinusoidal profiles may form, under monochromatic and partially coherent illumination, pseudoimages whose contrast or modulation present a smooth dependence on the gap between the two gratings. 0030-4018 10.1016/j.optcom.2004.03.024 https://hdl.handle.net/20.500.14352/51202 http://dx.doi.org/10.1016/j.optcom.2004.03.024 http://www.sciencedirect.com Quasicontinuous pseudoimages in sinusoidal grating imaging using an extended light source