Sergey Kovalev
Sergey Kovalev
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Extremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermions
HA Hafez, S Kovalev, JC Deinert, Z Mics, B Green, N Awari, M Chen, ...
Nature 561 (7724), 507-511, 2018
High-field high-repetition-rate sources for the coherent THz control of matter
B Green, S Kovalev, V Asgekar, G Geloni, U Lehnert, T Golz, M Kuntzsch, ...
Scientific reports 6 (1), 22256, 2016
Terahertz nonlinear optics of graphene: from saturable absorption to high‐harmonics generation
HA Hafez, S Kovalev, KJ Tielrooij, M Bonn, M Gensch, D Turchinovich
Advanced Optical Materials 8 (3), 1900771, 2020
Inertial spin dynamics in ferromagnets
K Neeraj, N Awari, S Kovalev, D Polley, N Zhou Hagström, ...
Nature Physics 17 (2), 245-250, 2021
Phase-resolved Higgs response in superconducting cuprates
H Chu, MJ Kim, K Katsumi, S Kovalev, RD Dawson, L Schwarz, ...
Nature communications 11 (1), 1793, 2020
Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2
S Kovalev, RMA Dantas, S Germanskiy, JC Deinert, B Green, I Ilyakov, ...
Nature communications 11 (1), 2451, 2020
Grating-graphene metamaterial as a platform for terahertz nonlinear photonics
JC Deinert, D Alcaraz Iranzo, R Pérez, X Jia, HA Hafez, I Ilyakov, N Awari, ...
ACS nano 15 (1), 1145-1154, 2020
Electrical tunability of terahertz nonlinearity in graphene
S Kovalev, HA Hafez, KJ Tielrooij, JC Deinert, I Ilyakov, N Awari, ...
Science advances 7 (15), eabf9809, 2021
Probing ultra-fast processes with high dynamic range at 4th-generation light sources: Arrival time and intensity binning at unprecedented repetition rates
S Kovalev, B Green, T Golz, S Maehrlein, N Stojanovic, AS Fisher, ...
Structural Dynamics 4 (2), 2017
Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films
N Awari, S Kovalev, C Fowley, K Rode, RA Gallardo, YC Lau, D Betto, ...
Applied Physics Letters 109 (3), 2016
Selective THz control of magnetic order: new opportunities from superradiant undulator sources
S Kovalev, Z Wang, JC Deinert, N Awari, M Chen, B Green, S Germanskiy, ...
Journal of Physics D: Applied Physics 51 (11), 114007, 2018
A method of calibration of terahertz wave brightness under nonlinear-optical detection
GK Kitaeva, SP Kovalev, AN Penin, AN Tuchak, PV Yakunin
Journal of Infrared, Millimeter and Terahertz Waves, 1-13, 2011
Photon diagnostics at the FLASH THz beamline
R Pan, E Zapolnova, T Golz, AJ Krmpot, MD Rabasovic, J Petrovic, ...
Journal of synchrotron radiation 26 (3), 700-707, 2019
Magnetic field dependence of antiferromagnetic resonance in NiO
Z Wang, S Kovalev, N Awari, M Chen, S Germanskiy, B Green, JC Deinert, ...
Applied physics letters 112 (25), 2018
Two alternative approaches to electro-optical detection of terahertz pulses
SP Kovalev, GK Kitaeva
JETP letters 94 (2), 91-96, 2011
Terahertz electro-optical detection: optical phase or energy measurements
SP Kovalev, GK Kitaeva
JOSA B 30 (10), 2650-2656, 2013
Dispersion of the dielectric function real part for Mg: LiNbO 3 crystals at terahertz frequencies
KA Kuznetsov, SP Kovalev, GK Kitaeva, TD Wang, YY Lin, YC Huang, ...
Applied Physics B: Lasers and Optics 101 (4), 811-815, 2010
Quasi-phase-matched probe-energy electro-optic sampling as a method of narrowband terahertz detection
GK Kitaeva, SP Kovalev, II Naumova, RA Akhmedzhanov, IE Ilyakov, ...
Applied Physics Letters 96, 071106, 2010
Successful user operation of a superconducting radio-frequency photoelectron gun with Mg cathodes
J Teichert, A Arnold, G Ciovati, JC Deinert, P Evtushenko, M Justus, ...
Physical Review Accelerators and Beams 24 (3), 033401, 2021
Terahertz signatures of ultrafast Dirac fermion relaxation at the surface of topological insulators
S Kovalev, KJ Tielrooij, JC Deinert, I Ilyakov, N Awari, M Chen, ...
npj Quantum Materials 6 (1), 84, 2021
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