Spin–orbit coupling induced by ascorbic acid crystals
Some anisotropic materials form semicrystalline structures, called spherulites, when observed in a polarisation microscope, exhibit a characteristic “maltese-cross”-like pattern. While this observation has been hitherto considered as a tool to characterize these materials, we show that these pattern...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2022-0502 |
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| author | Grenapin Florence D’Errico Alessio Karimi Ebrahim |
| author_facet | Grenapin Florence D’Errico Alessio Karimi Ebrahim |
| author_sort | Grenapin Florence |
| collection | DOAJ |
| description | Some anisotropic materials form semicrystalline structures, called spherulites, when observed in a polarisation microscope, exhibit a characteristic “maltese-cross”-like pattern. While this observation has been hitherto considered as a tool to characterize these materials, we show that these patterns are associated with a strong light’s spin–orbit coupling induced by the spherulite structures. We experimentally demonstrate these effects using samples of crystallized ascorbic acid and observing the creation of optical vortices in transmitted laser beams, as well as the formation of inhomogeneous polarisation patterns. Our findings suggest the use of some spherulites based on other materials in frequency ranges, e.g. in the THz domain, where polarisation and spatial shaping of electromagnetic radiation is still a challenging task. |
| format | Article |
| id | doaj-art-2c2d4ed44c7149d2a1dbe02bcfd78c3a |
| institution | OA Journals |
| issn | 2192-8606 2192-8614 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-2c2d4ed44c7149d2a1dbe02bcfd78c3a2025-08-20T02:23:36ZengDe GruyterNanophotonics2192-86062192-86142023-01-0112142789279510.1515/nanoph-2022-0502Spin–orbit coupling induced by ascorbic acid crystalsGrenapin Florence0D’Errico Alessio1Karimi Ebrahim2Nexus for Quantum Technologies, University of Ottawa, K1N 5N6, ON, Ottawa, CanadaNexus for Quantum Technologies, University of Ottawa, K1N 5N6, ON, Ottawa, CanadaNexus for Quantum Technologies, University of Ottawa, K1N 5N6, ON, Ottawa, CanadaSome anisotropic materials form semicrystalline structures, called spherulites, when observed in a polarisation microscope, exhibit a characteristic “maltese-cross”-like pattern. While this observation has been hitherto considered as a tool to characterize these materials, we show that these patterns are associated with a strong light’s spin–orbit coupling induced by the spherulite structures. We experimentally demonstrate these effects using samples of crystallized ascorbic acid and observing the creation of optical vortices in transmitted laser beams, as well as the formation of inhomogeneous polarisation patterns. Our findings suggest the use of some spherulites based on other materials in frequency ranges, e.g. in the THz domain, where polarisation and spatial shaping of electromagnetic radiation is still a challenging task.https://doi.org/10.1515/nanoph-2022-0502metasurfacesorbital angular momentumspherulitesstructured light |
| spellingShingle | Grenapin Florence D’Errico Alessio Karimi Ebrahim Spin–orbit coupling induced by ascorbic acid crystals Nanophotonics metasurfaces orbital angular momentum spherulites structured light |
| title | Spin–orbit coupling induced by ascorbic acid crystals |
| title_full | Spin–orbit coupling induced by ascorbic acid crystals |
| title_fullStr | Spin–orbit coupling induced by ascorbic acid crystals |
| title_full_unstemmed | Spin–orbit coupling induced by ascorbic acid crystals |
| title_short | Spin–orbit coupling induced by ascorbic acid crystals |
| title_sort | spin orbit coupling induced by ascorbic acid crystals |
| topic | metasurfaces orbital angular momentum spherulites structured light |
| url | https://doi.org/10.1515/nanoph-2022-0502 |
| work_keys_str_mv | AT grenapinflorence spinorbitcouplinginducedbyascorbicacidcrystals AT derricoalessio spinorbitcouplinginducedbyascorbicacidcrystals AT karimiebrahim spinorbitcouplinginducedbyascorbicacidcrystals |