Far field of binary phase gratings with errors in the height of the strips
Diffraction gratings are not always ideal but, due to the fabrication process, several errors can be produced. In this work we show that when the strips of a binary phase diffraction grating present certain randomness in their height, the intensity of the diffraction orders varies with respect to th...
| Autores: | , |
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| Tipo de recurso: | capítulo de libro |
| Fecha de publicación: | 2009 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/45647 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/45647 |
| Access Level: | acceso abierto |
| Palabra clave: | 535.42 Polarization gratings Light-scattering Rough strips Diffraction Demultiplexer Surfaces Óptica (Física) Materiales ópticos 2209.19 Óptica Física 2209.14 Propiedad ópticas de los sólidos |
| Sumario: | Diffraction gratings are not always ideal but, due to the fabrication process, several errors can be produced. In this work we show that when the strips of a binary phase diffraction grating present certain randomness in their height, the intensity of the diffraction orders varies with respect to that obtained with a perfect grating. To show this, we perform an analysis of the mutual coherence function and then, the intensity distribution at the far field is obtained. In addition to the far field diffraction orders, a "halo" that surrounds the diffraction order is found, which is due to the randomness of the strips height. |
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