Plasmonic Metalens to Generate an Airy Beam
Airy beams represent an important type of non-diffracting beams—they are the only non-diffracting wave in one dimension, and thus they can be produced with a cylindrical geometry that modifies a wavefront in one dimension. In this paper, we show the design of a cylindrical plasmonic metalens consist...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/18/2576 |
| _version_ | 1827724943514664960 |
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| author | Citlalli T. Sosa-Sánchez Ricardo Téllez-Limón |
| author_facet | Citlalli T. Sosa-Sánchez Ricardo Téllez-Limón |
| author_sort | Citlalli T. Sosa-Sánchez |
| collection | DOAJ |
| description | Airy beams represent an important type of non-diffracting beams—they are the only non-diffracting wave in one dimension, and thus they can be produced with a cylindrical geometry that modifies a wavefront in one dimension. In this paper, we show the design of a cylindrical plasmonic metalens consisting of an array of nanoslits in a gold thin layer that modulates the phase of a Gaussian beam to generate an airy beam propagating in free space. Based on the numerical results, we show that it is possible to generate an airy beam by only matching the phase of wavefronts coming out from the array of gold nanoslits to the airy beam phase at plane <inline-formula><math display="inline"><semantics><mrow><mi>z</mi><mo>=</mo><mn>0</mn></mrow></semantics></math></inline-formula>. We numerically demonstrate that the airy beam exhibits bending over propagation and self-healing properties. The transmission efficiency is around 60%. The simplicity of the proposed structure open new perspectives in the design of flat metasurfaces for light-focusing applications. |
| first_indexed | 2024-03-10T22:22:34Z |
| format | Article |
| id | doaj.art-c1b2285b800447abaee6662aeb80b823 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T22:22:34Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c1b2285b800447abaee6662aeb80b8232023-11-19T12:14:56ZengMDPI AGNanomaterials2079-49912023-09-011318257610.3390/nano13182576Plasmonic Metalens to Generate an Airy BeamCitlalli T. Sosa-Sánchez0Ricardo Téllez-Limón1Unidad Foránea Monterrey, Centro de Investigación Científica y de Educación Superior de Ensenada, Alianza Centro 504, PIIT, Apodaca 66629, MexicoCONAHCYT—Unidad Foránea Monterrey, Centro de Investigación Científica y de Educación Superior de Ensenada, Alianza Centro 504, PIIT, Apodaca 66629, MexicoAiry beams represent an important type of non-diffracting beams—they are the only non-diffracting wave in one dimension, and thus they can be produced with a cylindrical geometry that modifies a wavefront in one dimension. In this paper, we show the design of a cylindrical plasmonic metalens consisting of an array of nanoslits in a gold thin layer that modulates the phase of a Gaussian beam to generate an airy beam propagating in free space. Based on the numerical results, we show that it is possible to generate an airy beam by only matching the phase of wavefronts coming out from the array of gold nanoslits to the airy beam phase at plane <inline-formula><math display="inline"><semantics><mrow><mi>z</mi><mo>=</mo><mn>0</mn></mrow></semantics></math></inline-formula>. We numerically demonstrate that the airy beam exhibits bending over propagation and self-healing properties. The transmission efficiency is around 60%. The simplicity of the proposed structure open new perspectives in the design of flat metasurfaces for light-focusing applications.https://www.mdpi.com/2079-4991/13/18/2576metalensesplasmonicsairy beammetaphotonics |
| spellingShingle | Citlalli T. Sosa-Sánchez Ricardo Téllez-Limón Plasmonic Metalens to Generate an Airy Beam Nanomaterials metalenses plasmonics airy beam metaphotonics |
| title | Plasmonic Metalens to Generate an Airy Beam |
| title_full | Plasmonic Metalens to Generate an Airy Beam |
| title_fullStr | Plasmonic Metalens to Generate an Airy Beam |
| title_full_unstemmed | Plasmonic Metalens to Generate an Airy Beam |
| title_short | Plasmonic Metalens to Generate an Airy Beam |
| title_sort | plasmonic metalens to generate an airy beam |
| topic | metalenses plasmonics airy beam metaphotonics |
| url | https://www.mdpi.com/2079-4991/13/18/2576 |
| work_keys_str_mv | AT citlallitsosasanchez plasmonicmetalenstogenerateanairybeam AT ricardotellezlimon plasmonicmetalenstogenerateanairybeam |