258 citations · 536 across the 7 of their papers we have counts for
8 papers
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…
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…
Quantum Walk Comb in a Fast Gain Laser
Ina Heckelmann, Mathieu Bertrand, Alexander Dikopoltsev +3
Synthetic lattices in photonics enable the exploration of light states in new dimensions, transcending phenomena common only to physical space. We propose and demonstrate a Quantum…
Frequency-modulated combs via on-chip field enhancement
Urban Senica, Alexander Dikopoltsev, Andres Forrer +5
Frequency-modulated (FM) combs feature flat intensity spectra with a linear frequency chirp, useful for metrology and sensing applications. Generating FM combs in semiconductor las…
Amplified Emission by Atoms and Lasing in Photonic Time Crystals
Mark Lyubarov, Yaakov Lumer, Alex Dikopoltsev +3
Photonic Time Crystals (PTCs) - dielectric media with their refractive index modulated periodically in time, offer new opportunities in photonics arising from time reflections and…
Light Emission by Free Electrons in Photonic Time-Crystals
Alex Dikopoltsev, Yonatan Sharabi, Mark Lyubarov +5
Photonic time-crystals (PTCs) are spatially-homogeneous media whose electromagnetic (EM) susceptibility varies periodically in time, causing temporal reflections and refractions fo…
Deep learning reconstruction of ultrashort pulses from 2D spatial intensity patterns recorded by an all-in-line system in a single-shot
Ron Ziv, Alex Dikopoltsev, Tom Zahavy +4
We propose a simple all-in-line single-shot scheme for diagnostics of ultrashort laser pulses, consisting of a multi-mode fiber, a nonlinear crystal and a CCD camera. The system re…
Deep Learning Reconstruction of Ultra-Short Pulses
Tom Zahavy, Alex Dikopoltsev, Oren Cohen +2
Ultra-short laser pulses with femtosecond to attosecond pulse duration are the shortest systematic events humans can create. Characterization (amplitude and phase) of these pulses…