Time-refraction and time-reflection above critical angle for total internal reflection
Optics
2024-05-21 v2
Abstract
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
Cite
@article{arxiv.2311.15070,
title = {Time-refraction and time-reflection above critical angle for total internal reflection},
author = {Lior Bar-Hillel and Alex Dikopoltsev and Amit Kam and Yonatan Sharabi and Ohad Segal and Eran Lustig and Mordechai Segev},
journal= {arXiv preprint arXiv:2311.15070},
year = {2024}
}