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Reflectarray-Assisted Spacial Binning in HEB-Based Terahertz Dispersive Spectrometer
P. 196–199.
Terahertz frequency range attracts the attention of the scientific community in different fields, including data transfer, imaging, and spectral analysis. In the context of astronomical instrumentation, the utilization of the 7–14 THz spectral band opens up opportunities for advanced studies of exoplanet formation and the energy balance in the interstellar medium from the Earth surface. In this work, we report on the design of reflectarray-assisted spacial binning in HEB-based terahertz dispersive spectrometer. Both simulation and measurement results are provided. The reflectarray prototype demonstrates nearly circular intrinsic polarization and cross-polarization levels below -20 dB in a 21% wide fractional bandwidth at least. Our studies suggest the feasibility of a spectral resolution of 400 if such a mechanically steerable reflectarray is coupled to a terahertz HEB detector with a broadband Gaussisity of the far-field beam.
Shilov A. L., Elesin L., Kravtsov M. et al., Nature Communications 2026 Vol. 17 No. 1 Article 9734
Identifying the microscopic processes limiting conductivity is essential for understanding correlated quantum materials. In twisted bilayer graphene, metallic resistivity follows ρ ~ Tα with widely varying α, fueling competing interpretations from phonon-limited transport and umklapp scattering to strange metallicity and heavy-fermion renormalization. Here, we use terahertz excitation to selectively heat electrons while keeping the lattice cold, separating ...
Added: September 20, 2026
Prikhodko A., Khakimov A., Mokrov E. et al., Lecture Notes in Computer Science 2024 Vol. 14123 P. 423–434
The future 6G cellular systems are expected to utilize the lower part of the terahertz frequency band, 100–300 GHz. As a result of high path losses, the coverage of such systems will be limited to a few tens of meters making them suitable for indoor environments. As compared to outdoor deployments, indoor usage of THz systems ...
Added: September 25, 2024
Khakimov A., Prikhodko A., Mokrov E. et al., Lecture Notes in Computer Science 2024 Vol. 14542 P. 181–193
Blockage detection is a critical functionality for the air interface in modern 5G and future 6G systems operating in millimeter wave (mmWave, 30–300 GHz) and terahertz (0.3–3 THz) frequency bands. In operational systems, blockage has to be detected prior to its occurrence to allow for time to take some actions to avoid the loss of ...
Added: September 25, 2024
Shurakov A., Лобанов Ю. В., Kardakova A. et al., В кн.: Коллективная монография «Терагерцовая фотоника».: М.: Российская Академия наук, 2023. С. 633–711.
Термин «электронный разогрев», относящийся, в первую очередь, к физике полупроводников, сейчас также используется при описании физических основ функционирования отдельного класса сверхпроводниковых детекторов – болометров на горячих электронах (HEB, англ. Hot Electron Bolometers). К настоящему времени HEB детекторы проявили себя с лучшей стороны в составе гетеродинных приборных комплексов, использованных для нужд радиоастро- номии и терагерцевой (ТГц) ...
Added: March 6, 2024
Kirill Shein, Zharkova E., Kashchenko M. et al., Nano Letters 2024 Vol. 24 No. 7 P. 2282–2288
The rapid development of infrared spectroscopy, observational astronomy, and scanning near-field microscopy has been enabled by the emergence of sensitive mid- and far-infrared photodetectors. Superconducting hot-electron bolometers (HEBs), known for their exceptional signal-to-noise ratio and fast photoresponse, play a crucial role in these applications. While superconducting HEBs are traditionally crafted from sputtered thin films such ...
Added: February 13, 2024
Gayduchenko I., M.: Our Style, 2023.
The abstracts of reports of the 5th International Conference “Terahertz and Microwave Radiation: Generation, Detec- tion and Applications” (TERA-2023). TERA-2023 conference is devoted to the discussion of fundamental and applied problems related to the generation and detection of terahertz and microwave radiation as well as its interaction with matter. The purpose of the conference is ...
Added: February 12, 2024
Yurin A., Vishnyakov G., Minaev V. et al., Measurement Science and Technology 2024 Vol. 35 No. 3 Article 035204
Added: December 19, 2023
Vishnyakov G., Yurin A., Minaev V. et al., Metrologia 2023 Vol. 60 No. 4 Article 045007
We present a method for measuring the refractive index (RI) and spectral characteristics of transparent triangular prisms based on the minimum deviation technique. The proposed method has been developed to automatically measure RI simultaneously for three different wavelengths to determine the spectral dependence of RI. A high precision dynamic goniometer with a He-Ne ring laser ...
Added: June 28, 2023
Shurakov A., Belikov I., Prikhodko A. et al., Applied Sciences (Switzerland) 2023 Vol. 13 No. 10 Article 5892
Terahertz photonic integrated circuits are becoming popular in ultrafast on-chip signal generation and processing. They outperform assemblies of electronic devices making use of metallic waveguides in term of both fabrication complexity and system losses. In this study, we report on a nearly all-dielectric hot electron bolometer mixer compatible with the technology of integrated Si photonic ...
Added: May 11, 2023
E. Khorov, A. Krasilov, M. Susloparov et al., IEEE Communications Surveys and Tutorials 2023 Vol. 25 No. 4 P. 2862–2891
Emerging wireless systems target to provide multi-Gbps data rates for each user, which can be achieved by utilizing ultra-wide channels available at mmWave, terahertz, and lightwave frequencies. In contrast to the traditional spectrum below 6 GHz, these high-frequency bands raise many issues, complicating their usage. For example, because of high signal attenuation and blockage by ...
Added: December 23, 2022
Stepanov N., Moltchanov D., Begishev V. et al., IEEE Transactions on Vehicular Technology 2022 Vol. 71 No. 1 P. 725–738
Terahertz (THz, 0.3!!-!!3 THz) wireless access is nowadays considered as a major enabling technology for sixth generation (6G) cellular systems. To compensate for high propagation losses, these systems will utilize antenna arrays with extremely directional beams. The performance of such systems will thus be heavily affected by micromobility such as shakes and rotations of user ...
Added: October 27, 2022
Vinnichenko M. Y., Makhov I., Ustimenko R. V. et al., , in: 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).: IEEE, 2022. P. 1–2.
Added: October 25, 2022
Shestakov A. Y., D A Moiseenko, Shuvalov S. D. et al., Engineering Research Express 2022 Vol. 4 No. 2 Article 026002
This article presents the results of development and testing of a simple and compact ion energy-mass
analyzer. PICA (Plasma Ion Compact Analyzer) is designed as a solution for solar wind measurements,
polar proton precipitation monitoring and as a miniature solution for various space plasma
experiments.Weintroduce general ideas that lead to the development of a simple and low-cost
instrument and ...
Added: October 20, 2022
Baggio M., Tamminen A., Presnyakov S. et al., , in: Optics InfoBase Conference Papers.: The Optical Society, 2021.
Added: December 14, 2021
Baggio M., Tamminen A., Presnyakov S. et al., , in: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021.: IEEE, 2021. P. 1–1.
Terahertz imaging and sensing is currently being explored as a method for corneal disease detection as systems operating in this spectrum are sensitive to corneal-water content and thickness. The free-space wavelength of the low-frequency THz band is close to the typical human corneal central thickness (CCT, 540 μm) and the water content is distributed in ...
Added: December 14, 2021
Makhov I. S., Panevin V. Y., Firsov D. A. et al., Journal of Luminescence 2019 Vol. 210 P. 352–357
The low-temperature terahertz and near-infrared photoluminescence from the near-infrared laser nanostructure with GaAs/AlGaAs quantum wells doped with shallow donors is studied under intense interband optical excitation. The optical electron transitions involving excited and ground donor states in quantum wells are revealed in terahertz and near-infrared photoluminescence spectra. Impurity assisted near-infrared stimulated emission under interband optical ...
Added: October 15, 2021
Gayduchenko I., Xu S. G., Alymov G. et al., Nature Communications 2021 Vol. 12 No. 1 Article 543
The rectification of electromagnetic waves to direct currents is a crucial process for energy harvesting, beyond-5G wireless communications, ultra-fast science, and observational astronomy. As the radiation frequency is raised to the sub-terahertz (THz) domain, ac-to-dc conversion by conventional electronics becomes challenging and requires alternative rectification protocols. Here, we address this challenge by tunnel field-effect transistors ...
Added: September 27, 2021
Petrov V., M. Komarov, D. Moltchanov et al., IEEE Transactions on Wireless Communications 2017 Vol. 16 No. 3 P. 1791–1808
The fifth generation wireless systems are expected to rely on a large number of small cells to massively offload traffic from the cellular and even from the wireless local area networks. To enable this functionality, mm-wave (EHF) and Terahertz (THF) bands are being actively explored. These bands are characterized by unique propagation properties compared with ...
Added: March 12, 2018
Trifonov A., Tong C. E., Lobanov Y. et al., IEEE Transactions on Applied Superconductivity 2017 Vol. 27 No. 4 P. 1–4
Abstract:
The superconducting energy gap is a fundamental characteristic of a superconducting film, which, together with the applied pump power and the biasing setup, defines the instantaneous resistive state of the Hot Electron Bolometer (HEB) mixer at any given bias point on the I-V curve. In this paper we report on a series of experiments, in ...
Added: January 18, 2018