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Dmitry Ponomarev

Dmitry Ponomarev
Institute of Ultra-High Frequency Semiconductor Electronics RAS

PhD in Electrical Engineering

About

149
Publications
19,692
Reads
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1,148
Citations
Citations since 2017
127 Research Items
1052 Citations
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
Introduction
Dr. Dmitry Ponomarev is currently Heading the mutual optoelectronics lab between the Institute of Ultra-High Frequency Semiconductor Electronics RAS and the Prokhorov General Physics Institute RAS. The group does research in the cutting-edge photonics and THz optoelectronics. The main focus is on the development of photoconductive devices for spectroscopy and high-speed imaging as well as wireless communications for 5G and beyond.
Additional affiliations
December 2018 - December 2020
Moscow Institute of Physics and Technology
Position
  • PI
Description
  • nanophotonics and plasmonics
July 2018 - present
Russian Academy of Sciences
Position
  • Senior Researcher
May 2012 - present
Russian Academy of Sciences
Position
  • Managing Director
Education
September 2003 - February 2012
National Research Nuclear University MEPhI
Field of study
  • solid-state physics

Publications

Publications (149)
Article
Full-text available
We propose, fabricate, and evaluate strain-induced InGaAs/InAlAs superlattice (SL), which can efficiently radiate broadband terahertz (THz) waves. By means of optical pump-probe measurements, we demonstrate ultrashort photocarriers relaxation times of τ=1.7 ps without Be-doping of InGaAs photoconductive layers. We assume two dominant mechanisms to...
Article
Full-text available
We report on the experimental observation of the curved plasmonic beam, a plasmonic hook (PH), for surface plasmon-polariton (SPP) waves. The SPP PH effect could be obtained with a cuboid particle with broken shape symmetry fabricated with a relatively simple routine. This has a pronounced difference with fabrication of structure for generation of...
Article
We report on a THz detector based on a photoconductive antenna (PCA) utilizing an artificially strained undoped InGaAs/InAlAs superlattice (SL). Using our laboratory pulsed THz time-domain spectrometer, we demonstrate the advancement of the strain-induced SL-based PCA-detector (SID) when operating with an optical probe power of Popt >6 mW over the...
Article
We report on a sapphire-fiber-based lens that can be used to enhance the emitted THz power of a large-area photoconductive antenna (PCA). Using numerical simulations, we demonstrate that the lens provides a spatial redistribution of the photocarriers density in the PCA’s gap. By optimizing the diameter of the sapphire-fiber, one could reach efficie...
Article
Direct laser writing/ultra-hyperdoping technology was harnessed to fabricate a universal CMOS-compatible Si-based broadband (UV-THz) n-p junction detector, with its spectral response controlled by external liquid helium-nitrogen cooling. Near-far IR (2-40 μm) temperature-dependent photoconductivity (PC) was revealed in a biased n-p junction, made o...
Article
Double-barrier GaAs/AlAs resonant tunneling diodes (RTDs) have become the promising elements for the development of sub-mm and THz emitters. We report on the fabrication of the RTD samples that were characterized via RF-reflectometry to determine the parameters of its equivalent circuit. By using numerical simulation we show that the coplanar trans...
Article
Full-text available
We discuss experimental and theoretical studies of the generation of the third terahertz (THz) frequency harmonic in thin films of Bi2Se3 and Bi2-xSbxTe3-ySey (BSTS) topological insulators (TIs) and the generation of THz radiation in photoconductive antennas based on the TI films. The experimental results, supported by the developed kinetic theory...
Article
We report the seminal approach for localization of photocarriers in a photoconductive antenna (PCA)-emitter via the focusing element comprising the sapphire fiber. Using numerical simulation, we showed that at the certain ratio between the fiber diameter and the gap size, i.e. d/g = 22.5, one can attain a 35-fold enhancement of the laser irradiatio...
Conference Paper
Full-text available
A new lasing scheme with sequential two-photon emission in the gain module for terahertz quantum cascade laser (THz QCL) is proposed and experimentally demonstrated. THz QCLs based on MBE- and MOCVD-grown structures with two-photon design have a lasing frequency of 3.8 THz and maximum operation temperature around 100 K.
Article
The design of a terahertz (THz) quantum cascade laser (QCL) with an active module based on three GaAs/Al0.18Ga0.82As quantum wells for high-temperature generation at a frequency of about 3.3 THz is optimized. A heterostructure based on the developed design with an active region thickness of 10 μm is grown by molecular-beam epitaxy with a deviation...
Article
Continuously tunable middle-infrared bandpass filters have been developed based on gradient metal-hole arrays with two distinct geometries. The rotation filter relies on an array of metal holes with gradually changing periods and hole sizes in the azimuthal direction, while the translation filter exploits a metal-hole array with a linear gradient....
Article
Full-text available
Unique effects of terahertz (THz)-wave–matter interaction push rapid progress in THz optoelectronics aimed at bridging the problematic THz gap. However, majority of modern methods of THz spectroscopy and imaging are still hampered by low spatial resolution. Common lens/mirror-based THz optics fails to overcome the Abbe barrier and usually provides...
Article
We report on the development and fabrication of a plasmonic metasurfaces for PCA based on InAlAs/InGaAs superlattice heterostructures. As a result of THz time-domain measurements, it was found that for PCA emitters with a 150 nm thick plasmonic metasurface, the maximum recorded overall THz power was 5.3 (the optical-THz conversion efficiency was 0....
Article
Full-text available
We have demonstrated a quantum cascade laser (QCL) with a generation frequency of about 3.8 THz, grown by metal-organic vapor phase epitaxy. The multilayer heterostructure for QCLs consists of 185 repetitions of an active module containing four GaAs/Al0.15Ga0.85As quantum wells. The threshold current and threshold voltage of the fabricated QCL were...
Article
Full-text available
In this work, we conduct research of spectral and power characteristics of quantum cascade lasers (QCLs) based on a GaAs/Al0.15Ga0.85As active region emitting at 2.3 (A), 3.2 (B) and 4.1 (C) THz. The QCL devices had a double-metal Au waveguide and operated in pulsed mode with 1.5–9 us pulses at 20 Hz repetition rate. Using the integral output power...
Article
Full-text available
We have demonstrated a quantum cascade laser (QCL) with a generation frequency of about 3.8 THz, grown by metal-organic vapor phase epitaxy. The multilayer heterostructure for QCLs consists of 185 repetitions of an active module containing four GaAs/Al 0.15 Ga 0.85 As quantum wells. The threshold current and threshold voltage of the fabricated QCL...
Article
We study the band designs of terahertz quantum-cascade lasers (THz QCLs) with an active region of GaAs/AlxGa1−xAs quantum wells (QWs) by using the solution of the Schr¨odinger equation with allowance for dephasing of quantum states, as well as solving a system of closed balance equations. For two-QW designs with increased AlxGa1−xAs potential barri...
Article
In this work, we conduct research of spectral and power characteristics of quantum cascade lasers (QCLs) based on a GaAs/Al 0.15 Ga 0.85 As active region emitting at 2.3 (A), 3.2 (B) and 4.1 (C) THz. The QCL devices had a double-metal Au waveguide and operated in pulsed mode with 1.5-9 μs pulses at 20 Hz repetition rate. Using the integral output p...
Article
Beginning from the 1990s, an ever-lasting interest in the THz spectroscopy and THz instruments has produced wide progress in the development of high-speed THz detectors. The constantly growing requirements aimed at the increase of spectral resolution, sensitivity, and acquisition rate of THz detectors have attracted much attention in this field til...
Article
Full-text available
Over the past two decades, the operation temperature of terahertz quantum cascade lasers (THz QCLs) has continuously increased from cryogenic level to the current record value of 250 K (about -23°C) [1]. Here we review the state-of-the-art and future prospects of high-temperature THz QCL designs with two-quantum wells in active module based on conv...
Article
Full-text available
Terahertz (THz) technology is promising in several applications such as imaging, spectroscopy and communications. Among several methods in the generation and detection of THz waves, a THz time-domain system that is developed using photoconductive antennas (PCA) as emitter and detector presents several advantages such as simple alignment, low cost,...
Article
In this work, optical-to-terahertz conversion of 800 nm femtosecond laser pulses in large-area bias-free InGaAs emitters based on photo-Dember (PD) and lateral photo- Dember (LPD) effects is experimentally investigated. We use metamorphic buffers to grow sub-μm thick InxGa1-xAs layers with indium mole fraction x = 0.37, 0.53 and 0.70 on a GaAs subs...
Conference Paper
Full-text available
We report on two approaches aimed at increasing the performance of a photoconductive antenna (PCA) due to enhanced optical light confinement in a PCA's gap. The first refers to the use of a high-aspect ratio metal grating maintaining plasmonic guided modes while the second implies an asymmetric dielectric particle combined with a prism on a metal s...
Conference Paper
We have designed and fabricated 2.3 THz QCL with active module based on 4 QWs GaAs/Al0.15Ga0.85As. The light-current-voltage (L-I-V) characteristics and emission spectra of fabricated THz QCL are investigated. The nonmonotonic behavior of L–I characteristic and a large number of discontinuities in I-V characteristic is observed. Our calculations sh...
Preprint
Full-text available
Terahertz (THz) technology is promising in several applications such as imaging, spectroscopy and communications. Among several methods in the generation and detection of THz waves, a THz time domain system (TDS) that is developed using photoconductive antennas (PCA) as emitter and detector presents several advantages such as simple alignment, low...
Article
The plasmon-assisted photoconductive antenna-emitter has been developed, optimized, and fabricated on a semi-insulating GaAs photoconductive substrate. Using numerical simulation, we showed that a high aspect-ratio of the antenna plasmonic electrodes h/p = 0.5 (where h and p are height and period of metal grating, respectively) can substantially in...
Article
We describe a method of parameters extraction for the lumped element network representing resonant tunneling diodes (RTDs). The method is based on onchip reflection coefficient measurements in a wide frequency range from 1 kHz up to 60 GHz in combination with differential resistance measurements. We have proposed and fabricated double-barrier GaAs/...
Article
Quantum cascade lasers (QCL) are widely adopted as prominent and easy-to-use solid-state sources of terahertz radiation. Yet some applications require generation and detection of very sharp and narrow terahertz-range pulses with a specific spectral composition. We have studied time-resolved light-current (L–I) characteristics of multimode THz QCL o...
Article
The efficiency of electric pumping of THz quantum-cascade lasers (QCLs) with strip geometry is studied depending on the number and position of contact pads. The numerical simulation of the electric potential distribution in the THz QCL active region is used to determine the required thicknesses of the upper metallization layers of the THz QCLs to m...
Article
Full-text available
Terahertz (THz) solid immersion microscopy is a novel promising THz imaging modality that overcomes the Abbe diffraction limit. In our prior work, an original reflection-mode THz solid immersion microscope system with the resolution of 0.15λ (in free space) was demonstrated and used for imaging of soft biological tissues. In this paper, a numerical...
Article
We report on the experimental study of the photoconductive antennas (PCAs) - detectors based on superlattice heterostructures (SLS) InGaAs/InAs/InAlAs with different types of elastic stresses in their functional layers. By using our laboratory time-domain THz spectrometer we measured and compared the detected THz signals, noise characteristics, and...
Article
Full-text available
In this work, we have optimized the THz QCL design with an active module based on three GaAs/Al0.18Ga0.82As quantum wells for high-temperature generation at a frequency of about 3.3 THz. A heterostructure based on the developed design with an active region thickness of 10 μm was grown by molecular beam epitaxy with a deviation of the active module...
Conference Paper
We have designed and fabricated 2.3 THz QCL with active module based on 4 QWs GaAs/Al0.15Ga0.85As. The light-current-voltage characteristics, emission spectra and far-field distribution of the emission intensity of the fabricated THz QCL are investigated.To evaluate the potential of the Hg1-xCdxTe structures as a gain medium for QCL operating at fr...
Article
Full-text available
We propose far-infrared photodetectors with the graphene nanoribbon (GNR) array as the photosensitive element and the black phosphorus (bP) base layer (BL). The operation of these GNR infrared photodetectors (GNR-IPs) is associated with the interband photogeneration of the electron-hole pairs in the GNR array followed by the tunneling injection of...
Article
Full-text available
A continuously-tunable terahertz (THz) bandpass filter based on the resonant electromagnetic-wave transmission through a metal-hole array featuring a gradually changing period was developed and fabricated on a silicon substrate using optical lithography. A gradient geometry of the metal-hole array yields a wide tunability of the filter transmission...
Article
Full-text available
The lack of radiation sources in the frequency range of 7-10 THz is associated with strong absorption of the THz waves on optical phonons within the GaAs Reststrahlen band. To avoid such absorption, we propose to use HgCdTe as an alternative material for THz quantum cascade lasers thanks to a lower phonon energy than in III-V semiconductors. In thi...
Cover Page
Full-text available
Dear Scholars, Optical Engineering is now welcoming submissions for a Special Section on Advances in Terahertz and Infrared Optoelectronics, guest edited by Irina N. Dolganova, Dmitry S. Ponomarev, Michael S. Shur, Igor E. Spektor, Peter S. Timashev, and Valery V. Tuchin. The submission deadline is 31 October 2020. This special section will pres...
Cover Page
Full-text available
This Special Issue in the honor 60th jubilee of Profs. I.V. Minin and O.V. Minin provides a multidisciplinary reflection on their career, indicating some of their scientific interests and contributions. The guest editors of this Special Issue would like to thank all authors for their efforts in preparing their contributions and thank all the review...
Article
Full-text available
Terahertz (THz) waves feature high sensitivity to the content and state of water in biological tissues. Therefore, during the past decades, THz technology has attracted significant attention in biophotonics, including diagnosis of malignant and benign neoplasms with different nosologies and localizations. The pathophysiological features of malignan...
Article
Full-text available
We propose and study a microstructure based on a dielectric cuboid placed on a thin metal film that can act as an efficient plasmonic lens allowing focusing surface plasmons at the subwavelength scale. Using numerical simulations of surface plasmon-polariton (SPP) field intensity distributions, we observe high-intensity subwavelength spots and form...
Preprint
Full-text available
We report on a very first experimental observation of a new curved plasmonic beam, a plasmonic hook (PH), for surface plasmon-polariton (SPP) waves. We demonstrate that the SPP PH effect could be realized within a trapezoidal dielectric microstructure with the relative ease of fabrication compared to the generation of the Airy SPP waves which requi...
Conference Paper
Full-text available
We report on a novel-designed superlattice (SL) InGaAs/InAlAs with artificially introduced epitaxial stresses into functional layers. The optimized and fabricated strained SL demonstrates a sub-picosecond photocarrier lifetime of 1.7 ps nevertheless featuring a rather moderate mobility. By means of numerical simulation we observe a decrease in the...
Article
The fabrication and investigation of single and multilayered structures have become an essential issue in the past decades since these structures directly define valuable properties and efficiency of widely used terahertz (THz) emitters and detectors. Since the development of molecular-beam epitaxy, as well as other crystal growth techniques, a var...
Preprint
Full-text available
HgCdTe-based quantum cascade lasers operating in the GaAs phonon Reststrahlen band with a target wavelength of 36 mkm are theoretically investigated using the balance equations method. The optimized active region designs, which are based on three and two quantum wells, exhibit a peak gain exceeding 100 cm(-1) at 150 K. We analyze the temperature de...
Article
Over the past few decades, significant attention has been paid to the biomedical applications of terahertz (THz) technology. Nowadays, THz spectroscopy and imaging have allowed numerous demanding problems in the biological, medical, food, plant and pharmaceutical sciences to be solved. Among the biomedical applications, the label-free diagnosis of...
Article
We report on experimental study of the photoconductive antennas (PCA)-emitters featuring conventional topology as well as metallic metasurface with plasmonic grating, based on the InGaAs/InAlAs superlattices. We measure and determine the photocurrents and the emission spectra of the PCAs, as well as the energy characteristics of the terahertz (THz)...
Article
Full-text available
Предложен высокочувствительный терагерцевый (THz) детектор на основе фотопроводящей антенны (ФПА) с плазмонным усилением на базе сверхрешеточной гетероструктуры InGaAs/InAlAs. Экспериментально обнаружено заметное увеличение фототока, регистрируемого плазмонным ФПА-детектором, и отношения сигнал/шум по сравнению с аналогичными параметрами для ФПА-де...
Preprint
Full-text available
We report on the first experimental demonstration that the microstructure based on a dielectric cuboid combined to a thin metal film can act as an efficient plasmonic lens allowing focusing surface plasmons in a subwavelength scale. By means of numerical simulation of surface plasmon-polariton (SPP) field intensity distributions in the microstructu...
Article
The second part of the review work discusses the current state of research in the diagnosis of malignant neoplasms using terahertz (THz) spectroscopy and imaging. Particular attention is paid to potential applications of THz technology in early non-invasive, minimally invasive and intraoperative diagnostics, as well as in histological studies. The...
Article
Full-text available
This review highlights recent and novel trends focused on metallic (plasmonic) and dielectric metasurfaces in photoconductive terahertz (THz) devices. We demonstrate the great potential of its applications in the field of THz science and technology, nevertheless indicating some limitations and technological issues. From the state-of-the-art, the me...
Article
Full-text available
We investigate the light-current-voltage characteristics and emission spectra of 2.3 THz quantum cascade laser operating in the negative differential resistance (NDR) region. It was shown that the formation of electric field domains (EFDs) leads to a large number of discontinuities on the current-voltage and the total optical power on current chara...
Article
В последние десятилетия растет интерес к применению терагерцовой (ТГц) техники в ранней неинвазивной, малоинвазивной и интраоперационной диагностике злокачественных новообразований различной нозологии и локализации. Методы ТГц диагностики основаны на ТГц спектроскопии и визуализации тканей, при этом используются естественные (эндогенные) маркеры но...
Article
We report on the design, evaluation and fabrication of the sub-terahertz (sub-THz) detector using a GaAs gated field-effect transistor with a buried quasi-two-dimensional electron gas created by the self-assembled Sn-nanothreads (Sn-NTs) embedded into the GaAs channel. This GaAs-Sn-NTs detector efficiently detects a sub- THz radiation at cryogenic...
Article
Full-text available
A model based on a system of balance equations for localised and continuum states is developed to calculate the current – voltage (I – V) and power characteristics of quantum-cascade lasers (QCLs) operating in the terahertz (THz) range. A method for modifying the eigenbasis of the Schrödinger equation by reducing the dipole moments of tunnel-couple...
Conference Paper
Full-text available
We propose and consider different approaches aimed at increasing the performance of a photoconductive antenna (PCA)-emitter due to enhanced optical light confinement using a high-aspect ratio plasmonic grating (plasmonic nanoantenna) maintaining plasmonic guided modes as well as an asymmetric dielectric particle with a prism (dielectric nanoantenna...