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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.01831 |
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| _version_ | 1866913658031833088 |
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| author | Rizza, Carlo Vincenti, Maria Antonietta Castaldi, Giuseppe Contestabile, Alessandra Galdi, Vincenzo Scalora, Michael |
| author_facet | Rizza, Carlo Vincenti, Maria Antonietta Castaldi, Giuseppe Contestabile, Alessandra Galdi, Vincenzo Scalora, Michael |
| contents | Space-time modulation of electromagnetic parameters offers novel exciting possibilities for advanced field manipulations. In this study, we explore wave scattering from a time-varying interface characterized by a Lorentz-type dispersion with a step-like temporal variation in its parameters. Our findings reveal a new process: an unconventional frequency generation at the natural resonances of the system. Remarkably, this phenomenon enables the coupling of propagating waves to evanescent ones, allowing the direct far-field excitation of surface-wave modes without the mediation of spatial gratings or prisms. These results suggest a novel strategy for designing compact and ultra-fast photonic devices, eliminating the necessity for subwavelength spatial structuring or prolonged temporal modulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_01831 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Harnessing the natural resonances of time-varying dispersive interfaces Rizza, Carlo Vincenti, Maria Antonietta Castaldi, Giuseppe Contestabile, Alessandra Galdi, Vincenzo Scalora, Michael Optics Materials Science Space-time modulation of electromagnetic parameters offers novel exciting possibilities for advanced field manipulations. In this study, we explore wave scattering from a time-varying interface characterized by a Lorentz-type dispersion with a step-like temporal variation in its parameters. Our findings reveal a new process: an unconventional frequency generation at the natural resonances of the system. Remarkably, this phenomenon enables the coupling of propagating waves to evanescent ones, allowing the direct far-field excitation of surface-wave modes without the mediation of spatial gratings or prisms. These results suggest a novel strategy for designing compact and ultra-fast photonic devices, eliminating the necessity for subwavelength spatial structuring or prolonged temporal modulations. |
| title | Harnessing the natural resonances of time-varying dispersive interfaces |
| topic | Optics Materials Science |
| url | https://arxiv.org/abs/2409.01831 |