2026-06-26T10:10:37Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/511522023-08-25T19:29:40Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Torcal Milla, Francisco José
author
Sánchez Brea, Luis Miguel
author
Bernabeu Martínez, Eusebio
2023-06-20T10:45:17Z
2023-06-20T10:45:17Z
2008-12-01
0030-4018
10.1016/j.optcom.2008.08.027
https://hdl.handle.net/20.500.14352/51152
http://dx.doi.org/10.1016/j.optcom.2008.08.027
http://www.sciencedirect.com
Steel tape gratings are used in different metrology applications. As the period of these gratings was large (around 100μm,), its analytical study has been performed, up to date, using a geometrical approach. Nowadays, steel tape gratings can be manufactured with lower periods, around 20–40 μm, and diffractive effects must be taken into account. Also, due to the roughness of the surface, statistical techniques need to be considered to analyze their behavior. In this work, an analysis of the pseudo-imaging formation in a double grating system including one steel tape grating is performed. In particular Moiré and Lau configurations are analyzed. We have found that roughness significantly affects to Moiré configuration. However, its effect is negligible in Lau configuration. Generalized grating imaging configuration is also studied in depth. It is shown that roughness does not affect to the contrast of pseudoimages, but it modifies their depth of focus.
eng
Double grating systems with one steel tape grating
journal article
URL
https://docta.ucm.es/bitstreams/e7e81a6c-0181-4c0d-83be-a8d2dba5c9ac/download
File
MD5
c93323141329cc91e6025d510f4c5753
312879
application/pdf
Bernabeu,E27.pdf