All Stories

  1. Pre-Flight calculation of the orbital parameters of a small satellite

    Article • January 2022, American Institute of Physics

    Dr Dmitrii Ushakov

  2. Optimization of THz quantum cascade lasers with an active module based on two-quantum wells for high-temperature operation

    Article • Journal of Physics Conference Series, December 2021, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  3. Orbit Determination Methods For LEO Satellites From Probabilistic Analysis, Circular Motion Model And Single Pass Doppler Measurements

    Article • June 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  4. Small Satellite Orbit Determination Methods Based on the Doppler Measurements by Belarusian State University Ground Station

    Article • IEEE Journal on Miniaturization for Air and Space Systems, June 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  5. Feasibility of lasing in the GaAs Reststrahlen band with HgTe multiple quantum well laser diodes

    Article • Journal of Physics D Applied Physics, February 2021, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  6. Simulation on the nonuniform electrical pumping efficiency of THz quantum-cascade lasers

    Article • Quantum Electronics, February 2021, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  7. Limiting factors to the performance and operation frequency range of THz quantum cascade laser based on GaAs/AlGaAs heterostructures

    Article • January 2021, American Institute of Physics

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  8. THz quantum cascade lasers based on GaAs/AlGaAs and HgCdTe material systems

    Article • November 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  9. Research and educational network of ground stations for receiving and processing information from educational satellites

    Article • IOP Conference Series Materials Science and Engineering, November 2020, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  10. Determination of the Orbit of an Unknown Ultra-Small Spacecraft Based on the Circular Perturbed Motion Model and Measurements of the Doppler Frequency Shift

    Article • Moscow University Physics Bulletin, September 2020, Allerton Press

    Dr Dmitrii Ushakov

  11. HgCdTe-based quantum cascade lasers operating in the GaAs phonon Reststrahlen band predicted by the balance equation method

    Article • Optics Express, August 2020, Optical Society of America (OSA)

    Dr Dmitrii Ushakov

  12. Analysis of Phonon Modes and Electron–Phonon Interaction in Quantum-Cascade Laser Heterostructures

    Article • Semiconductors, August 2020, Pleiades Publishing Ltd

    Dr Dmitrii Ushakov

  13. Small Satellite Orbit Determination Using The University Ground Station

    Article • June 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  14. Simulation of Navigation Receiver for Ultra-Small Satellite

    Article • Devices and Methods of Measurements, December 2019, Belarusian National Technical University

    Dr Dmitrii Ushakov

  15. The operation of THz quantum cascade laser in the region of negative differential resistance

    Article • Opto-Electronics Review, December 2019, Elsevier

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  16. Balance-equation method for simulating terahertz quantum-cascade lasers using a wave-function basis with reduced dipole moments of tunnel-coupled states

    Article • Quantum Electronics, October 2019, Institute of Physics Publishing

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  17. Spectra of mode loss in THz quantum cascade laser with double metal waveguide based on Au, Cu and Ag

    Article • June 2019, SPIE

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  18. Silver-based double metal waveguide for terahertz quantum cascade laser

    Article • March 2019, SPIE

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  19. Mode loss spectra in THz quantum-cascade lasers with gold- and silver-based double metal waveguides

    Article • Quantum Electronics, November 2018, Institute of Physics Publishing

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  20. Temperature Dependences of the Threshold Current and Output Power of a Quantum-Cascade Laser Emitting at 3.3 THz

    Article • Semiconductors, October 2018, Pleiades Publishing Ltd

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  21. The investigation of temperature degradation in THz quantum cascade lasers based on resonant-phonon design

    Article • June 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  22. Power characteristics of lasers with quantum-well waveguides and blocking layers

    Article • Quantum Electronics, April 2018, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  23. Terahertz quantum cascade lasers with silver- and gold-based waveguides

    Article • EPJ Web of Conferences, January 2018, EDP Sciences

    Dr Rustam Khabibullin, Dr Dmitrii Ushakov

  24. Effect of active-region “volume” on the radiative properties of laser heterostructures with radiation output through the substrate

    Article • Semiconductors, January 2017, Pleiades Publishing Ltd

    Dr Dmitrii Ushakov

  25. Current-injection efficiency in semiconductor lasers with a waveguide based on quantum wells

    Article • Semiconductors, January 2014, Pleiades Publishing Ltd

    Dr Dmitrii Ushakov

  26. Efficiency of GaInAs/GaAs quantum-well lasers upon inhomogeneous excitation of quantum wells

    Article • Quantum Electronics, November 2013, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  27. Study of methods for lowering the lasing frequency of a terahertz quantum-cascade laser based on two quantum wells

    Article • Semiconductors, November 2012, Pleiades Publishing Ltd

    Dr Dmitrii Ushakov

  28. Calculation of energy characteristics for Si1–x Ge x –Si structures with single quantum wells

    Article • Journal of Applied Spectroscopy, March 2011, Springer Science + Business Media

    Dr Dmitrii Ushakov

  29. Calculation of energy characteristics of Si<inf>1−x</inf>Ge<inf>x</inf>-Si quantum-well heterostructures using k·p method

    Article • September 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  30. Calculation of gain and luminescence spectra of quantum-cascade laser structures taking into account asymmetric emission line broadening

    Article • Quantum Electronics, May 2010, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  31. Photoluminescence of the GaAs Superlattices with Quasi-Delta-Doped Layers

    Article • The Open Optics Journal, September 2009, Bentham Science Publishers

    Dr Dmitrii Ushakov

  32. Emission spectra of terahertz quantum cascade laser

    Article • Radiophysics and Quantum Electronics, July 2009, Springer Science + Business Media

    Dr Dmitrii Ushakov

  33. Production of broadband modal gain spectra in asymmetric multiple quantum-well Ga0.47In0.53As/Ga0.18In0.82As0.4P0.6heterostructures

    Article • Quantum Electronics, November 2008, Institute of Physics Publishing

    Dr Dmitrii Ushakov

  34. Numerical calculation of the gain and luminescence spectra of the quantum cascade structures

    Article • October 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  35. Wide modal gain spectra in the asymmetric multiple-quantum-well heterostructures Ga<inf>0.47</inf>In<inf>0.53</inf>As-Ga<inf>0.18</inf>In<inf>0.82</inf>As<inf>0.4</inf>P<inf>0.6</inf>

    Article • October 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  36. Energy and emission spectra of the Ga<inf>1−x</inf>In<inf>x</inf>As<inf>y</inf>Sb<inf>1−y</inf>/Al<inf>x</inf>Ga<inf>1−x</inf>As<inf>y</in...

    Article • September 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  37. Energy and emission characteristics of superlattice quantum-cascade structures

    Article • Optics and Spectroscopy, May 2008, Pleiades Publishing Ltd

    Dr Dmitrii Ushakov

  38. Two-period model for calculation of level populations in subbands of multi-period quantum-cascade superlattice structures

    Article • Journal of Applied Spectroscopy, November 2007, Springer Science + Business Media

    Dr Dmitrii Ushakov

  39. Wave-Guide Gain Flat Spectrum Construction in the Ga<inf>x</inf>In<inf>1-x</inf>As<inf>y</inf>Sb<inf>1-y</inf> Asymmetric Multiple-Quantum-Well Heterostructures

    Article • September 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  40. Nonlinearities in the reflection and transmission spectra of the photonic bandgap heterostructures with n–i–p–i crystals

    Article • Optical and Quantum Electronics, June 2007, Springer Science + Business Media

    Dr Dmitrii Ushakov

  41. Calculation of the Injection Coefficients for the Superlattice Quantum Cascade Structures

    Article • June 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  42. Self-consistent calculations of the energy and tunable emission spectra of doping superlattices

    Article • April 2006, SPIE

    Dr Dmitrii Ushakov

  43. Nonlinear gain and bistability in photonic crystal heterostructures with compositional and doping superlattices

    Article • September 2005, SPIE

    Dr Dmitrii Ushakov

  44. How to restrain Auger recombination predominance in the threshold of asymmetric bi-quantum-well lasers

    Article • Microelectronics Journal, March 2005, Elsevier

    Dr Dmitrii Ushakov

  45. <title>Temperature dependence of the threshold and Auger recombination in asymmetric quantum-well heterolasers</title>

    Article • September 2004, SPIE

    Dr Dmitrii Ushakov

  46. <title>Current carrier lifetime in doping superlattice crystals</title>

    Article • October 2003, SPIE

    Dr Dmitrii Ushakov

  47. EFFECTS OF DOPING AND NONRADIATIVE DEFECTS IN GaAs SUPERLATTICES

    Article • April 2003, World Scientific Pub Co Pte Lt

    Dr Dmitrii Ushakov

  48. Radiative characteristics of a two-section laser structure based on a δ-doping superlattice

    Article • Optics and Spectroscopy, March 2003, Pleiades Publishing Ltd

    Dr Dmitrii Ushakov

  49. Article • Journal of Applied Spectroscopy, January 2003, Springer Science + Business Media

    Dr Dmitrii Ushakov

  50. Multiple-wavelength lasing in one-dimensional bandgap structures: implementation with active n–i–p–i layers

    Article • Journal of the Optical Society of America B, September 2002, Optical Society of America (OSA)

    Dr Dmitrii Ushakov

  51. <title>Photonic bandgap structures with n-i-p-i layers</title>

    Article • June 2002, SPIE

    Dr Dmitrii Ushakov

  52. CONTROLLABLE ONE-DIMENSIONAL PHOTONIC STRUCTURES WITH n-i-p-i CRYSTAL LAYERS

    Article • April 2001, World Scientific Pub Co Pte Lt

    Dr Dmitrii Ushakov

  53. <title>Saturation of absorption in n-i-p-i crystals</title>

    Article • March 2001, SPIE

    Dr Dmitrii Ushakov

  54. Article • Journal of Applied Spectroscopy, January 2001, Springer Science + Business Media

    Dr Dmitrii Ushakov

  55. Effects of energy-spectrum broadening in alloyed semiconductor superlattices

    Article • Journal of Applied Spectroscopy, September 1999, Springer Science + Business Media

    Dr Dmitrii Ushakov

  56. Carrier Transport and Screening in n-i-p-i Crystals

    Article • physica status solidi (b), February 1999, Wiley

    Dr Dmitrii Ushakov

  57. <title>Optoelectronic properties and characteristics of doping superlattices</title>

    Article • November 1998, SPIE

    Dr Dmitrii Ushakov

  58. Laser parameters of n-i-p-i crystals

    Article • July 1998, SPIE

    Dr Dmitrii Ushakov

  59. VARIATION OF THE POTENTIAL RELIEF AND EMISSION SPECTRA IN DOPING SUPERLATTICES UNDER EXCITATION

    Article • April 1997, World Scientific Pub Co Pte Lt

    Dr Dmitrii Ushakov

  60. Energy levels and wave functions of thie superlattice quantum cascade structure with doped regions

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  61. Self-consistent calculations of the screened coulomb potential and density state tails in doping superlattices

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  62. Influence of the impurity fluctuations on the electronic and transport processes in doping superlattices

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  63. Lasing and light amplification in photonic crystal heterostructures

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  64. Nonlinear optical effects in one-dimensional photonic crystal heterostructure amplifiers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  65. Photoluminescence of the GaAs superlatticfs with quasi-delta-doped layers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  66. Photonic crystal heterostructures with controllable active layers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  67. Temperature dependence ofthe threshold and auger recombination in asymmetric quantum-well heterolasers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  68. Amplification in photonic crystal heterostructures with active media from doping superlattice layers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  69. Broadening effects on emission spectra of the superlattice QC structures

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  70. Control of transmission in photonic structures with n-i-p-i layers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  71. Functional optoelectronic properties of n-i-p-i superlattices and structures

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  72. Optical gain enhancement in PBG structure with active n-i-p-i superlattice

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  73. Modeling and characterization of microwave p-i-n photodiode

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  74. Regular oscillation in two-section laser structures based on δ-doped superlattices

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov

  75. Control of influence of Auger recombination on the threshold in asymmetric quantum-well lasers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Dmitrii Ushakov