Translationally invariant metamirrors for spatial filtering of light beams
We propose a translationally invariant metamirror for light filtering in reflection. The device consists of athin transverse grating in the micron scale positioned in front of a flat mirror. We analyze the performance ofsuch a photonic metamirror and find a modification of the angular spectrum of th...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/330436 |
| Acceso en línea: | https://hdl.handle.net/2117/330436 https://dx.doi.org/10.1103/PhysRevA.102.013517 |
| Access Level: | acceso abierto |
| Palabra clave: | Light filters Reflection (Optics) Mirrors Llum -- Filtres Reflexió (Òptica) Miralls Àrees temàtiques de la UPC::Física |
| Sumario: | We propose a translationally invariant metamirror for light filtering in reflection. The device consists of athin transverse grating in the micron scale positioned in front of a flat mirror. We analyze the performance ofsuch a photonic metamirror and find a modification of the angular spectrum of the reflected beams, leading toa significant reduction of the beam divergence for particular configurations. This study points toward a typeof optical component, a flat metamirror with a filtering functionality and no alignment requirements, due to itstranslational invariance. |
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