Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2
Abstract Conventional optical elements are bulky and limited to specific functionalities, contradicting the increasing demand of miniaturization and multi-functionalities. Optical metasurfaces enable tailoring light-matter interaction at will, especially important for the infrared spectral range whi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-04-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-59122-5 |
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| author | Lukas Conrads Florian Bontke Andreas Mathwieser Paul Buske Matthias Wuttig Robert Schmitt Carlo Holly Thomas Taubner |
| author_facet | Lukas Conrads Florian Bontke Andreas Mathwieser Paul Buske Matthias Wuttig Robert Schmitt Carlo Holly Thomas Taubner |
| author_sort | Lukas Conrads |
| collection | DOAJ |
| description | Abstract Conventional optical elements are bulky and limited to specific functionalities, contradicting the increasing demand of miniaturization and multi-functionalities. Optical metasurfaces enable tailoring light-matter interaction at will, especially important for the infrared spectral range which lacks commercially available beam-shaping elements. While the fabrication of those metasurfaces usually requires cumbersome techniques, direct laser writing promises a simple and convenient alternative. Here, we exploit the non-volatile laser-induced insulator-to-metal transition of the plasmonic phase-change material In3SbTe2 (IST) for optical programming of large-area metasurfaces for infrared beam-shaping. We tailor the geometric phase of metasurfaces with rotated crystalline IST rod antennas to achieve beam steering, lensing, and beams carrying orbital angular momenta. Finally, we investigate multi-functional and cascaded metasurfaces exploiting enlarged holography, and design a single metasurface creating two different holograms along the optical axis. Our approach facilitates fabrication of large-area metasurfaces within hours, enabling rapid-prototyping of customized infrared meta-optics for sensing, imaging and quantum information. |
| format | Article |
| id | doaj-art-e8b37f3b8a214abe8cfca9f0d564eb25 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e8b37f3b8a214abe8cfca9f0d564eb252025-08-20T03:18:32ZengNature PortfolioNature Communications2041-17232025-04-011611910.1038/s41467-025-59122-5Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2Lukas Conrads0Florian Bontke1Andreas Mathwieser2Paul Buske3Matthias Wuttig4Robert Schmitt5Carlo Holly6Thomas Taubner7Institute of Physics (IA), RWTH Aachen UniversityInstitute of Physics (IA), RWTH Aachen UniversityFraunhofer Institute for Production Technology IPTChair for Technology of Optical Systems, RWTH Aachen UniversityInstitute of Physics (IA), RWTH Aachen UniversityFraunhofer Institute for Production Technology IPTChair for Technology of Optical Systems, RWTH Aachen UniversityInstitute of Physics (IA), RWTH Aachen UniversityAbstract Conventional optical elements are bulky and limited to specific functionalities, contradicting the increasing demand of miniaturization and multi-functionalities. Optical metasurfaces enable tailoring light-matter interaction at will, especially important for the infrared spectral range which lacks commercially available beam-shaping elements. While the fabrication of those metasurfaces usually requires cumbersome techniques, direct laser writing promises a simple and convenient alternative. Here, we exploit the non-volatile laser-induced insulator-to-metal transition of the plasmonic phase-change material In3SbTe2 (IST) for optical programming of large-area metasurfaces for infrared beam-shaping. We tailor the geometric phase of metasurfaces with rotated crystalline IST rod antennas to achieve beam steering, lensing, and beams carrying orbital angular momenta. Finally, we investigate multi-functional and cascaded metasurfaces exploiting enlarged holography, and design a single metasurface creating two different holograms along the optical axis. Our approach facilitates fabrication of large-area metasurfaces within hours, enabling rapid-prototyping of customized infrared meta-optics for sensing, imaging and quantum information.https://doi.org/10.1038/s41467-025-59122-5 |
| spellingShingle | Lukas Conrads Florian Bontke Andreas Mathwieser Paul Buske Matthias Wuttig Robert Schmitt Carlo Holly Thomas Taubner Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2 Nature Communications |
| title | Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2 |
| title_full | Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2 |
| title_fullStr | Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2 |
| title_full_unstemmed | Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2 |
| title_short | Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material In3SbTe2 |
| title_sort | infrared beam shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase change material in3sbte2 |
| url | https://doi.org/10.1038/s41467-025-59122-5 |
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