Extremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermions

HA Hafez, S Kovalev, JC Deinert, Z Mics, B Green… - Nature, 2018‏ - nature.com
Multiple optical harmonic generation—the multiplication of photon energy as a result of
nonlinear interaction between light and matter—is a key technology in modern electronics …

Post-2000 nonlinear optical materials and measurements: data tables and best practices

N Vermeulen, D Espinosa, A Ball… - Journal of Physics …, 2023‏ - iopscience.iop.org
In its 60 years of existence, the field of nonlinear optics has gained momentum especially
over the past two decades thanks to major breakthroughs in material science and …

Inertial spin dynamics in ferromagnets

K Neeraj, N Awari, S Kovalev, D Polley… - Nature Physics, 2021‏ - nature.com
The understanding of how spins move and can be manipulated at pico-and femtosecond
timescales has implications for ultrafast and energy-efficient data-processing and storage …

Electrical tunability of terahertz nonlinearity in graphene

S Kovalev, HA Hafez, KJ Tielrooij, JC Deinert… - Science …, 2021‏ - science.org
Graphene is conceivably the most nonlinear optoelectronic material we know. Its nonlinear
optical coefficients in the terahertz frequency range surpass those of other materials by …

Grating-graphene metamaterial as a platform for terahertz nonlinear photonics

JC Deinert, D Alcaraz Iranzo, R Pérez, X Jia… - ACS …, 2020‏ - ACS Publications
Nonlinear optics is an increasingly important field for scientific and technological
applications, owing to its relevance and potential for optical and optoelectronic technologies …

Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2

S Kovalev, RMA Dantas, S Germanskiy… - Nature …, 2020‏ - nature.com
Harmonic generation is a general characteristic of driven nonlinear systems, and serves as
an efficient tool for investigating the fundamental principles that govern the ultrafast …

Efficient ultrafast field-driven spin current generation for spintronic terahertz frequency conversion

I Ilyakov, A Brataas, TVAG de Oliveira… - Nature …, 2023‏ - nature.com
Efficient generation and control of spin currents launched by terahertz (THz) radiation with
subsequent ultrafast spin-to-charge conversion is the current challenge for the next …

The elbe infrared and thz facility at helmholtz-zentrum dresden-rossendorf

M Helm, S Winnerl, A Pashkin, JM Klopf… - The European Physical …, 2023‏ - Springer
The coherent infrared and THz sources driven by the superconducting electron accelerator
ELBE are described. The present status of the facility is summarized and a few scientific …

Fano interference between collective modes in cuprate high-Tc superconductors

H Chu, S Kovalev, ZX Wang, L Schwarz, T Dong… - Nature …, 2023‏ - nature.com
Cuprate high-T c superconductors are known for their intertwined interactions and the
coexistence of competing orders. Uncovering experimental signatures of these interactions …

A universal route to efficient non-linear response via Thomson scattering in linear solids

Y Wen, F Giorgianni, I Ilyakov, B Quan… - National Science …, 2023‏ - academic.oup.com
Non-linear materials are cornerstones of modern optics and electronics. Strong dependence
on the intrinsic properties of particular materials, however, inhibits the at-will extension of …