D. Yavorskiy
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View article: Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals
Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals Open
A novel approach is presented to enhance terahertz (THz) nonlinear absorption by resonant excitation of 2D plasmons in grating‐gate plasmonic crystals. Using THz pump‐probe experiments, the nonlinear interaction of spectrally narrow THz pu…
View article: Terahertz magnon-polaritons control using a tunable liquid crystal cavity
Terahertz magnon-polaritons control using a tunable liquid crystal cavity Open
Strong coupling of light to a collective spin excitation in antiferromagnets gives rise to hybrid modes called magnon-polaritons. They are highly promising for data manipulation and transfer at terahertz rates, much faster than in the case…
View article: Low-energy excitations in multiple modulation-doped CdTe/(CdMg)Te quantum wells
Low-energy excitations in multiple modulation-doped CdTe/(CdMg)Te quantum wells Open
Low energy excitations of a two-dimensional electron gas (2DEG) in modulation-doped multiple (ten) quantum wells (QWs) was studied using far-infrared magneto-transmission technique at liquid helium temperatures. A large distance between ne…
View article: Extreme Terahertz Nonlinearity of AlGaN/GaN-based Grating-Gate Plasmonic Crystals
Extreme Terahertz Nonlinearity of AlGaN/GaN-based Grating-Gate Plasmonic Crystals Open
We present a novel approach to enhance THz nonlinearity by the resonant excitation of two-dimensional plasmons in grating-gate plasmonic crystals. Using a high-electric-field THz pump-THz probe technique, we investigate the nonlinear inter…
View article: Optical bound states in the continuum in subwavelength gratings made of an epitaxial van der Waals material
Optical bound states in the continuum in subwavelength gratings made of an epitaxial van der Waals material Open
High refractive index (4.4 at 1100 nm), negligibly small absorption in near-infrared spectral range, and ease of processing make MoSe$_2$ a perfect material for applications in near-infrared photonics. So far, implementation of MoSe$_2$-ba…
View article: Pressure tuning of HgCdTe epitaxial layers - the role of the highly disordered buffer layer
Pressure tuning of HgCdTe epitaxial layers - the role of the highly disordered buffer layer Open
Hg 1−x Cd x Te alloys are unique because by increasing the Cd content x , one modifies the band structure from inverted to normal, which fundamentally modifies the dispersion of bulk and surface or edge (in the case of quantum wells) energ…
View article: Pressure tuning of HgCdTe epitaxial layers -- the role of the highly disordered buffer layer
Pressure tuning of HgCdTe epitaxial layers -- the role of the highly disordered buffer layer Open
HgCdTe alloys are unique because by increasing the Cd content x, one modifies the band structure from inverted to normal, which fundamentally modifies the dispersion of bulk and surface or edge (in the case of quantum wells) energy states.…
View article: Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: Manifestation of spin-orbit band splitting
Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: Manifestation of spin-orbit band splitting Open
OPEN DATA related to the research publication: Sai, P., Potashin, S. O., Szoła, M., Yavorskiy, D., Cywiński, G., Prystawko, P., ... & Kachorovskii, V. Y. (2021). Beatings of ratchet current magneto-oscillations in GaN-based grating…
View article: Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: Manifestation of spin-orbit band splitting
Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: Manifestation of spin-orbit band splitting Open
OPEN DATA related to the research publication: Sai, P., Potashin, S. O., Szoła, M., Yavorskiy, D., Cywiński, G., Prystawko, P., ... & Kachorovskii, V. Y. (2021). Beatings of ratchet current magneto-oscillations in GaN-based grating…
View article: Grating Metamaterials Based on CdTe/CdMgTe Quantum Wells as Terahertz Detectors for High Magnetic Field Applications
Grating Metamaterials Based on CdTe/CdMgTe Quantum Wells as Terahertz Detectors for High Magnetic Field Applications Open
The cyclotron and magnetoplasmon resonances were studied at 2 K in grating metamaterials fabricated on wafers with one or two modulation doped CdTe/CdMgTe quantum wells. The gratings (with the period varied between 2 μ m and 8 μ m) were pr…
View article: Polarization of Magnetoplasmons in Grating Metamaterials Based on CdTe/CdMgTe Quantum Wells
Polarization of Magnetoplasmons in Grating Metamaterials Based on CdTe/CdMgTe Quantum Wells Open
Grating metamaterials were fabricated with electron beam lithography on CdTe/CdMgTe modulation doped structures with two non-interacting quantum wells. Two types of samples were studied: with etched gratings and with gratings formed by dep…
View article: Terahertz Spectroscopy of Double CdTe/CdMgTe Quantum Wells
Terahertz Spectroscopy of Double CdTe/CdMgTe Quantum Wells Open
Modulation doped CdTe/CdMgTe double quantum wells were studied at low temperatures and high magnetic fields.Transmission of THz monochromatic radiation from a molecular laser was studied as a function of magnetic field on samples with a gr…
View article: Magnetoconductivity and Terahertz Response of a HgCdTe Epitaxial Layer
Magnetoconductivity and Terahertz Response of a HgCdTe Epitaxial Layer Open
An epitaxial layer of HgCdTe—a THz detector—was studied in magnetotransmission, magnetoconductivity and magnetophotoconductivity experiments at cryogenic temperatures. In the optical measurements, monochromatic excitation with photon frequ…
View article: Subterahertz Emission from a Grid-Gated GaAs/AlGaAs Heterostructure
Subterahertz Emission from a Grid-Gated GaAs/AlGaAs Heterostructure Open
A subterahertz emission from a grid-gated structure lithographically fabricated on a GaAs/AlGaAs heterostructure was observed at liquid helium temperatures.The frequency of observed emission was equal to about 75 GHz and was almost indepen…
View article: Magnetoconductivity of a Mercury Cadmium Telluride Resonant THz Detector
Magnetoconductivity of a Mercury Cadmium Telluride Resonant THz Detector Open
Magnetoconductivity tensor σ of a THz detector made of a Hg1-xCdxTe epitaxial layer was determined at a few temperatures T between 2 K and 100 K for magnetic fields B up to 0.5 T. At all temperatures the sample exhibited n-type conductivit…
View article: Sub-Terahertz Emission from Field-Effect Transistors
Sub-Terahertz Emission from Field-Effect Transistors Open
View article: Response of Indium Antimonide at Sub-Terahertz and Terahertz Frequencies
Response of Indium Antimonide at Sub-Terahertz and Terahertz Frequencies Open
Responsivity of a bulk InSb detector at liquid helium temperature was studied in the frequency range 0.1 THz < f < 2.5 THz.The detector was exposed to a monochromatic radiation and its response was registered as a function of magnetic fiel…
View article: Sub-Terahertz Emission from Field-Effect Transistors
Sub-Terahertz Emission from Field-Effect Transistors Open
Several commercially available field-effect GaInAs-based transistors were studied as emitters of electromagnetic radiation.The emitters were tested either at room or at liquid helium temperature.To spectrally analyse emitted radiation, we …