Time-refraction and time-reflection above critical angle for total internal reflection
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arXiv
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| Format: | Preprint |
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2023
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| author | Bar-Hillel, Lior Dikopoltsev, Alex Kam, Amit Sharabi, Yonatan Segal, Ohad Lustig, Eran Segev, Mordechai |
| author_facet | Bar-Hillel, Lior Dikopoltsev, Alex Kam, Amit Sharabi, Yonatan Segal, Ohad Lustig, Eran Segev, Mordechai |
| contents | We study the time-reflection and time-refraction of waves caused by a spatial interface with a medium undergoing a sudden temporal change in permittivity. We show that monochromatic waves are transformed into a pulse by the permittivity change, and that time-reflection is enhanced at the vicinity of the critical angle for total internal reflection. In this regime, we find that the evanescent field is transformed into a propagating pulse by the sudden change in permittivity. These effects display enhancement of the time-reflection and high sensitivity near the critical angle, paving the way to experiments on time-reflection and photonic time-crystals at optical frequencies |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_15070 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Time-refraction and time-reflection above critical angle for total internal reflection Bar-Hillel, Lior Dikopoltsev, Alex Kam, Amit Sharabi, Yonatan Segal, Ohad Lustig, Eran Segev, Mordechai Optics We study the time-reflection and time-refraction of waves caused by a spatial interface with a medium undergoing a sudden temporal change in permittivity. We show that monochromatic waves are transformed into a pulse by the permittivity change, and that time-reflection is enhanced at the vicinity of the critical angle for total internal reflection. In this regime, we find that the evanescent field is transformed into a propagating pulse by the sudden change in permittivity. These effects display enhancement of the time-reflection and high sensitivity near the critical angle, paving the way to experiments on time-reflection and photonic time-crystals at optical frequencies |
| title | Time-refraction and time-reflection above critical angle for total internal reflection |
| topic | Optics |
| url | https://arxiv.org/abs/2311.15070 |