264 citations · 355 across the 15 of their papers we have counts for
15 papers
Reconstruction of partially occluded objects with a physics-driven self-training neural network
Mingjun Xiang, Kai Zhou, Hui Yuan +1
This study proposes a novel approach utilizing a physics-informed deep learning (DL) algorithm to reconstruct occluded objects in a terahertz (THz) holographic system. Taking the a…
Ultrafast gap dynamics upon photodoping the Mott-insulating phase of a two-dimensional organic charge-transfer salt
Konstantin Warawa, Yassine Agarmani, Harald Schubert +4
We investigate experimentally the ultrafast changes in the spectral response of the Mott insulator -(BEDT-TTF)Cu[N(CN)]Cl (-Cl) upon photodoping with intense excitati…
Strong coupling of plasmonic bright and dark modes with two eigenmodes of a photonic crystal cavity
Fanqi Meng, Lei Cao, Aristeidis Karalis +3
Dark modes represent a class of forbidden transitions or transitions with weak dipole moments between energy states. Due to their low transition probability, it is difficult to rea…
600-GHz Fourier Imaging Based on Heterodyne Detection at the 2nd Sub-harmonic
Hui Yuan, Alvydas Lisauskas, Mark D. Thomson +1
Fourier imaging is an indirect imaging method which records the diffraction pattern of the object scene coherently in the focal plane of the imaging system and reconstructs the ima…
Combined investigation of collective amplitude and phase modes in a quasi-one-dimensional charge-density-wave system over a wide spectral range
Konstantin Warawa, Nicolas Christophel, Sergei Sobolev +3
We investigate experimentally both the amplitude and phase channels of the collective modes in the quasi-1D charge-density-wave (CDW) system, K0.3MoO3, by combining (i) optical imp…
Higher-harmonic generation in boron-doped silicon from band carriers and bound-dopant photoionization
Fanqi Meng, Frederik Walla, Sergey Kovalev +10
We investigate ultrafast harmonic generation (HG) in Si:B, driven by intense pump pulses with fields reaching ~100 kV/cm and a carrier frequency of 300 GHz, at 4 K and 300 K, both…
Collective modes in the charge-density wave state of KMoO: The role of long-range Coulomb interactions revisited
Max O. Hansen, Yash Palan, Viktor Hahn +7
We re-examine the effect of long-range Coulomb interactions on the collective amplitude and phase modes in the incommensurate charge-density-wave ground state of quasi-one-dimensio…
Colossal magnetoresistance in EuZnP and its electronic and magnetic structure
Sarah Krebber, Marvin Kopp, Charu Garg +15
We investigate single crystals of the trigonal antiferromagnet EuZnP () by means of electrical transport, magnetization measurements, X-ray magnetic scatte…
Amplitude/Phase Retrieval for Terahertz Holography with Supervised and Unsupervised Physics-Informed Deep Learning
Mingjun Xiang, Hui Yuan, Lingxiao Wang +2
Recently, digital holographic imaging techniques (including methods with heterodyne detection) have found increased attention in the terahertz (THz) frequency range. However, holog…
Enhancement of the Monolayer WS2 Exciton Photoluminescence with a 2D-Material/Air/GaP In-Plane Microcavity
Oliver Mey, Franziska Wall, Lorenz Maximilian Schneider +8
Light-matter interaction with two-dimensional materials gained significant attention in recent years leading to the reporting of weak and strong coupling regimes, and effective nan…
Phase-channel dynamics reveal the role of impurities and screening in a quasi-one-dimensional charge-density wave system
M. D. Thomson, K. Rabia, F. Meng +3
We investigate the low-energy phase excitations of the quasi-one-dimensional charge density wave (CDW) in , by direct probing of infrared-a…
Ultrafast dynamic conductivity and scattering rate saturation of photoexcited charge carriers in silicon investigated with a midinfrared continuum probe
Fanqi Meng, Mark D. Thomson, Bo E. Sernelius +2
We employ ultra-broadband terahertz-midinfrared probe pulses to characterize the optical response of photoinduced charge-carrier plasmas in high-resistivity silicon in a reflection…
Electric field gradient induced effects in GaAs/AlGaAs modulation-doped structures and high frequency sensing
D. Seliuta, A. Juozapavicius, V. Gruzinskis +9
Electric field gradient effects induced by an asymmetrically in-plane shaped GaAs/AlGaAs modulation-doped structures of various design are investigated within 4-300 K temperature r…
Comment on "Dispersive Terahertz Gain of a Nonclassical Oscillator: Bloch Oscillation in Semiconductor Superlattices"
A. Lisauskas, N. V. Demarina, E. Mohler +1
In two recent Letters [Phys. Rev. Lett. 90, 046806; Phys. Rev. Lett. 94, 057408], Hirakawa et al. investigate the emission of coherent terahertz (THz) radiation from optically exci…
Determination of the Carrier-Envelope Phase of Few-Cycle Laser Pulses with Terahertz-Emission Spectroscopy
Markus Kress, Torsten Loeffler, Mark D. Thomson +8
The availability of few-cycle optical pulses opens a window to physical phenomena occurring on the attosecond time scale. In order to take full advantage of such pulses, it is cruc…