activity
20232026
most cited2D Topological Edge States in Periodic Space-Time Interfaces

3 citations · 6 across the 8 of their papers we have counts for

collaborators

8 papers

physics.optics2026

Extreme Ultrafast Dynamics of the Refractive Index in Transparent Conductive Oxides: Theory and Experiment

Noa Konforty, Graham G. Brown, Ohad Segal +5

Recent experiments in transparent conductive oxides (TCOs) have revealed light-induced order-unity variations in the refractive index occurring at extreme time scales, as short as…

physics.optics2026★ 1 cited

Sub-cycle time-refraction at optical frequencies

Ohad Segal, Noa Konforty, Oded Schiller +4

Large and abrupt variations in the electromagnetic properties of materials lead to dramatic effects: even a single step-like change in the refractive index induces striking phenome…

physics.optics2025★ 3 cited

2D Topological Edge States in Periodic Space-Time Interfaces

Ohad Segal, Yonatan Plotnik, Eran Lustig +4

Topological edge states in systems of two (or more) dimensions offer scattering-free transport, exhibiting robustness to inhomogeneities and disorder. In a different domain, time-m…

physics.optics2024

Long lived surface plasmons on the interface of a metal and a photonic time-crystal

Lior Bar-Hillel, Yonatan Plotnik, Ohad Segal +1

We predict the existence of surface plasmons polaritons at the interface between a metal and a periodically modulated dielectric medium, and find an unusual multi-branched dispersi…

physics.optics2024

Second Harmonic Generation and Nonlinear Frequency Conversion in Photonic Time-Crystals

Noa Konforty, Moshe-Ishay Cohen, Ohad Segal +2

We study the nonlinear process of second harmonic generation in photonic time-crystals, materials with refractive index that varies abruptly and periodically in time, and obtain th…

physics.optics2024

Time-Domain Bound States in the Continuum

Oded Schiller, Yonatan Plotnik, Ohad Segal +2

We present the concept of time-domain bound states in continuum. We show that a rapid judiciously-designed temporal modulation of the refractive index in a spatially homogenous med…

cond-mat.mtrl-sci2024★ 2 cited

Third Harmonic Enhancement Harnessing Photoexcitation Unveils New Nonlinearities in Zinc Oxide

Soham Saha, Sudip Gurung, Benjamin T. Diroll +7

Nonlinear optical phenomena are at the heart of various technological domains such as high-speed data transfer, optical logic applications, and emerging fields such as non-reciproc…

physics.optics2023

Time-refraction and time-reflection above critical angle for total internal reflection

Lior Bar-Hillel, Alex Dikopoltsev, Amit Kam +4

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 monochromati…