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

Quasicontinuous pseudoimages in sinusoidal grating imaging using an extended light source Sánchez Brea, Luis Miguel Alonso Fernández, José Bernabeu Martínez, Eusebio 535 Diffraction Gratings Illumination Óptica (Física) 2209.19 Óptica Física © Elsevier B. V. This project was supported by the Ministerio de Ciencia y Tecnología of Spain projects DPI2001-1238 and DPI2001-1369. 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. Ministerio de Ciencia y Tecnología (MCYT), España Depto. de Óptica Fac. de Ciencias Físicas TRUE pub 2023-06-20T10:46:38Z 2023-06-20T10:46:38Z 2004-06-01 journal article https://hdl.handle.net/20.500.14352/51202 0030-4018 10.1016/j.optcom.2004.03.024 eng DPI2001- 1238 DPI2001-1369 open access application/pdf Elsevier Science BV