Nano-shaping of chiral photons
Localized surface plasmon polaritons can confine the optical field to a single-nanometer-scale area, strongly enhancing the interaction between photons and molecules. Theoretically, the ultimate enhancement might be achieved by reducing the “photon size” to the molecular extinction cross-section. In...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-05-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2022-0779 |
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| _version_ | 1832570459580792832 |
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| author | Sunaba Yuji Ide Masaki Takei Ryo Sakai Kyosuke Pin Christophe Sasaki Keiji |
| author_facet | Sunaba Yuji Ide Masaki Takei Ryo Sakai Kyosuke Pin Christophe Sasaki Keiji |
| author_sort | Sunaba Yuji |
| collection | DOAJ |
| description | Localized surface plasmon polaritons can confine the optical field to a single-nanometer-scale area, strongly enhancing the interaction between photons and molecules. Theoretically, the ultimate enhancement might be achieved by reducing the “photon size” to the molecular extinction cross-section. In addition, desired control of electronic transitions in molecules can be realized if the “photon shape” can be manipulated on a single-nanometer scale. By matching the photon shape with that of the molecular electron wavefunction, optically forbidden transitions can be induced efficiently and selectively, enabling various unconventional photoreactions. Here, we demonstrate the possibility of forming single-nanometer-scale, highly intense fields of optical vortices using designed plasmonic nanostructures. The orbital and spin angular momenta provided by a Laguerre–Gaussian beam are selectively transferred to the localized plasmons of a metal multimer structure and then confined into a nanogap. This plasmonic nano-vortex field is expected to fit the molecular electron orbital shape and spin with the corresponding angular momenta. |
| format | Article |
| id | doaj-art-c8453306cc724f2197e465c40550ee0a |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-c8453306cc724f2197e465c40550ee0a2025-02-02T15:46:12ZengDe GruyterNanophotonics2192-86142023-05-0112132499250610.1515/nanoph-2022-0779Nano-shaping of chiral photonsSunaba Yuji0Ide Masaki1Takei Ryo2Sakai Kyosuke3Pin Christophe4Sasaki Keiji5Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, JapanResearch Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, JapanResearch Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, JapanResearch Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, JapanResearch Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, JapanResearch Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, JapanLocalized surface plasmon polaritons can confine the optical field to a single-nanometer-scale area, strongly enhancing the interaction between photons and molecules. Theoretically, the ultimate enhancement might be achieved by reducing the “photon size” to the molecular extinction cross-section. In addition, desired control of electronic transitions in molecules can be realized if the “photon shape” can be manipulated on a single-nanometer scale. By matching the photon shape with that of the molecular electron wavefunction, optically forbidden transitions can be induced efficiently and selectively, enabling various unconventional photoreactions. Here, we demonstrate the possibility of forming single-nanometer-scale, highly intense fields of optical vortices using designed plasmonic nanostructures. The orbital and spin angular momenta provided by a Laguerre–Gaussian beam are selectively transferred to the localized plasmons of a metal multimer structure and then confined into a nanogap. This plasmonic nano-vortex field is expected to fit the molecular electron orbital shape and spin with the corresponding angular momenta.https://doi.org/10.1515/nanoph-2022-0779laguerre–gaussian modelocalized surface plasmonnano-vortexoptically forbidden electronic transitionplasmonic nanoantenna |
| spellingShingle | Sunaba Yuji Ide Masaki Takei Ryo Sakai Kyosuke Pin Christophe Sasaki Keiji Nano-shaping of chiral photons Nanophotonics laguerre–gaussian mode localized surface plasmon nano-vortex optically forbidden electronic transition plasmonic nanoantenna |
| title | Nano-shaping of chiral photons |
| title_full | Nano-shaping of chiral photons |
| title_fullStr | Nano-shaping of chiral photons |
| title_full_unstemmed | Nano-shaping of chiral photons |
| title_short | Nano-shaping of chiral photons |
| title_sort | nano shaping of chiral photons |
| topic | laguerre–gaussian mode localized surface plasmon nano-vortex optically forbidden electronic transition plasmonic nanoantenna |
| url | https://doi.org/10.1515/nanoph-2022-0779 |
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