Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas
Abstract High refractive index dielectric nanoantennas strongly modify the decay rate via the Purcell effect through the design of radiative channels. Due to their dielectric nature, the field is mainly confined inside the nanostructure and in the gap, which is hard to probe with scanning probe tech...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2024-01-01
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| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-023-01349-2 |
| _version_ | 1827388167169245184 |
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| author | R. Margoth Córdova-Castro Bart van Dam Alberto Lauri Stefan A. Maier Riccardo Sapienza Yannick De Wilde Ignacio Izeddin Valentina Krachmalnicoff |
| author_facet | R. Margoth Córdova-Castro Bart van Dam Alberto Lauri Stefan A. Maier Riccardo Sapienza Yannick De Wilde Ignacio Izeddin Valentina Krachmalnicoff |
| author_sort | R. Margoth Córdova-Castro |
| collection | DOAJ |
| description | Abstract High refractive index dielectric nanoantennas strongly modify the decay rate via the Purcell effect through the design of radiative channels. Due to their dielectric nature, the field is mainly confined inside the nanostructure and in the gap, which is hard to probe with scanning probe techniques. Here we use single-molecule fluorescence lifetime imaging microscopy (smFLIM) to map the decay rate enhancement in dielectric GaP nanoantenna dimers with a median localization precision of 14 nm. We measure, in the gap of the nanoantenna, decay rates that are almost 30 times larger than on a glass substrate. By comparing experimental results with numerical simulations we show that this large enhancement is essentially radiative, contrary to the case of plasmonic nanoantennas, and therefore has great potential for applications such as quantum optics and biosensing. |
| first_indexed | 2024-03-08T16:13:46Z |
| format | Article |
| id | doaj.art-d54bc318a76c455e87b7566b27e9b2e8 |
| institution | Directory Open Access Journal |
| issn | 2047-7538 |
| language | English |
| last_indexed | 2024-03-08T16:13:46Z |
| publishDate | 2024-01-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj.art-d54bc318a76c455e87b7566b27e9b2e82024-01-07T12:47:49ZengNature Publishing GroupLight: Science & Applications2047-75382024-01-011311810.1038/s41377-023-01349-2Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennasR. Margoth Córdova-Castro0Bart van Dam1Alberto Lauri2Stefan A. Maier3Riccardo Sapienza4Yannick De Wilde5Ignacio Izeddin6Valentina Krachmalnicoff7Institut Langevin, ESPCI Paris, PSL University, CNRSInstitut Langevin, ESPCI Paris, PSL University, CNRSThe Blackett Laboratory, Department of Physics, Imperial College LondonThe Blackett Laboratory, Department of Physics, Imperial College LondonThe Blackett Laboratory, Department of Physics, Imperial College LondonInstitut Langevin, ESPCI Paris, PSL University, CNRSInstitut Langevin, ESPCI Paris, PSL University, CNRSInstitut Langevin, ESPCI Paris, PSL University, CNRSAbstract High refractive index dielectric nanoantennas strongly modify the decay rate via the Purcell effect through the design of radiative channels. Due to their dielectric nature, the field is mainly confined inside the nanostructure and in the gap, which is hard to probe with scanning probe techniques. Here we use single-molecule fluorescence lifetime imaging microscopy (smFLIM) to map the decay rate enhancement in dielectric GaP nanoantenna dimers with a median localization precision of 14 nm. We measure, in the gap of the nanoantenna, decay rates that are almost 30 times larger than on a glass substrate. By comparing experimental results with numerical simulations we show that this large enhancement is essentially radiative, contrary to the case of plasmonic nanoantennas, and therefore has great potential for applications such as quantum optics and biosensing.https://doi.org/10.1038/s41377-023-01349-2 |
| spellingShingle | R. Margoth Córdova-Castro Bart van Dam Alberto Lauri Stefan A. Maier Riccardo Sapienza Yannick De Wilde Ignacio Izeddin Valentina Krachmalnicoff Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas Light: Science & Applications |
| title | Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas |
| title_full | Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas |
| title_fullStr | Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas |
| title_full_unstemmed | Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas |
| title_short | Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas |
| title_sort | single emitter super resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas |
| url | https://doi.org/10.1038/s41377-023-01349-2 |
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