Metallic nanostructures as electronic billiards for nonlinear terahertz photonics
The optical properties of metallic nanoparticles are most often considered in terms of plasmons, the coupled states of light and quasifree electrons. Confinement of electrons inside the nanostructure leads to another, very different type of resonances. We demonstrate that these confinement-induced r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.043151 |
| _version_ | 1797210391743299584 |
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| author | Ihar Babushkin Liping Shi (石理平) Ayhan Demircan Uwe Morgner Joachim Herrmann Anton Husakou |
| author_facet | Ihar Babushkin Liping Shi (石理平) Ayhan Demircan Uwe Morgner Joachim Herrmann Anton Husakou |
| author_sort | Ihar Babushkin |
| collection | DOAJ |
| description | The optical properties of metallic nanoparticles are most often considered in terms of plasmons, the coupled states of light and quasifree electrons. Confinement of electrons inside the nanostructure leads to another, very different type of resonances. We demonstrate that these confinement-induced resonances typically join into a single composite “super-resonance,” located at significantly lower frequencies than the plasmonic resonance. This super-resonance influences the optical properties in the low-frequency range, in particular, producing giant nonlinearities. We show that such nonlinearities can be used for efficient down-conversion from optical to terahertz and midinfrared frequencies on the submicrometer propagation distances in nanocomposites. We discuss the interaction of the quantum-confinement-induced super-resonance with the conventional plasmonic ones, as well as the unusual quantum level statistics, adapting here the paradigms of the quantum billiard theory and showing the possibility to control the resonance position and width using the geometry of the nanostructures. |
| first_indexed | 2024-04-24T10:09:51Z |
| format | Article |
| id | doaj.art-a7dc0494932e49939cb48554592d37bc |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:09:51Z |
| publishDate | 2023-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-a7dc0494932e49939cb48554592d37bc2024-04-12T17:36:02ZengAmerican Physical SocietyPhysical Review Research2643-15642023-11-015404315110.1103/PhysRevResearch.5.043151Metallic nanostructures as electronic billiards for nonlinear terahertz photonicsIhar BabushkinLiping Shi (石理平)Ayhan DemircanUwe MorgnerJoachim HerrmannAnton HusakouThe optical properties of metallic nanoparticles are most often considered in terms of plasmons, the coupled states of light and quasifree electrons. Confinement of electrons inside the nanostructure leads to another, very different type of resonances. We demonstrate that these confinement-induced resonances typically join into a single composite “super-resonance,” located at significantly lower frequencies than the plasmonic resonance. This super-resonance influences the optical properties in the low-frequency range, in particular, producing giant nonlinearities. We show that such nonlinearities can be used for efficient down-conversion from optical to terahertz and midinfrared frequencies on the submicrometer propagation distances in nanocomposites. We discuss the interaction of the quantum-confinement-induced super-resonance with the conventional plasmonic ones, as well as the unusual quantum level statistics, adapting here the paradigms of the quantum billiard theory and showing the possibility to control the resonance position and width using the geometry of the nanostructures.http://doi.org/10.1103/PhysRevResearch.5.043151 |
| spellingShingle | Ihar Babushkin Liping Shi (石理平) Ayhan Demircan Uwe Morgner Joachim Herrmann Anton Husakou Metallic nanostructures as electronic billiards for nonlinear terahertz photonics Physical Review Research |
| title | Metallic nanostructures as electronic billiards for nonlinear terahertz photonics |
| title_full | Metallic nanostructures as electronic billiards for nonlinear terahertz photonics |
| title_fullStr | Metallic nanostructures as electronic billiards for nonlinear terahertz photonics |
| title_full_unstemmed | Metallic nanostructures as electronic billiards for nonlinear terahertz photonics |
| title_short | Metallic nanostructures as electronic billiards for nonlinear terahertz photonics |
| title_sort | metallic nanostructures as electronic billiards for nonlinear terahertz photonics |
| url | http://doi.org/10.1103/PhysRevResearch.5.043151 |
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