Отдел международной аспирантуры и докторантуры

Управление подготовки кадров высшей квалификации

Open Doors: Russian Scholarship Project

 

 
KOVALEV, Anton V.
Candidate of Sciences
Research interests
  • Optical data processing
  • Semiconductor lasers
  • Integrated photonics
  • Hybrid lasers
  • Nonlinear processes in lasers
List of the supervisor’s research projects (participation/supervision)
  • Development of platform hardware-software solution “Quantum communication platform for digital economics” (participation)
  • Research on fundamental processes of generation and detection of single photons (participation)
  • Research on methods and means for solving applied problems of laser and waveguide photonics, optoelectronics, and modern optics (participation)
List of potential thesis topics
  • Optical data processing based on nonlinear ring microresonators
  • Stabilization and pulse generation in hybrid semiconductor lasers\
  • Pulse generation and synchronization in lasers with delayed feedback
Key publications
  • 1. Chichkov N. B., Yadav A., Kovalev A. V., Smirnov S. V., Herper M., Fedorova K. A., Viktorov E. A., and Rafailov E. U. Pulse Dynamics in SESAM-free Electrically Pumped VECSEL // Optics Express. 2020. Vol. 28. No. 9. pp. 13466-13481. https://doi.org/10.1364/OE.385619
    2. Islam M. S., Kovalev A. V., Coget G., Viktorov E. A., Citrin D. S., and Locquet A. Staircase Dynamics of a Photonic Microwave Oscillator Based on a Laser Diode with Delayed Optoelectronic Feedback // Physical Review Applied. 2020. Vol. 13. No. 6. P. 064038. https://doi.org/10.1103/PhysRevApplied.13.064038
    3. Dmitriev P. S., Kovalev A. V., Locquet A., Rontani D., and Viktorov E. A. Asymmetrical performance of a laser-based reservoir computer with optoelectronic feedback // Optics Letters. 2020. Vol. 45. No. 22. pp. 6150-6153. https://doi.org/10.1364/OL.405177
    4. Slepneva S., Kovalev A., Rebrova N., Grigorenko K., Viktorov E., and Huyet G. Coherence transfer in an akinetic swept source OCT laser with optical feedback // Optics Letters. 2019. Vol. 44. No. 21. pp. 5161-5164. https://doi.org/10.1364/OL.44.005161
    5. Aadhi A., Kovalev A.V., Kues M., Roztocki P., Reimer C., Zhang Y., Wang T., Little B., Chu S., Wang Z., Moss D., Viktorov E.A., Morandotti R. Highly reconfigurable hybrid laser based on an integrated nonlinear waveguide // Optics Express. 2019. Vol. 27. No. 18. pp. 25251-25264. https://doi.org/10.1364/OE.27.025251
Key IPs
  1. Self-pulsing in a single-section electrically pumped VECSEL was investigated. It was revealed that in the presence of phase-amplitude coupling and a bandwidth-limiting element, the detuning of the latter against a cavity mode leads to forcing self-sustained chirped pulses. This was confirmed experimentally. (Optics Express. 2020. Vol. 28. No. 9. pp. 13466-13481)
  2. Periodic regime switching in a quantum-dash semiconductor laser with optoelectronic feedback was investigated. Experimentally observed progressive and abrupt transitions between periodic states were theoretically explained by the Eckhaus instability mechanism corresponding to sub- and supercritical torus bifurcations (Physical Review Applied. 2020. Vol. 13. No. 6. P. 064038)
  3. Reservoir computing model based on a semiconductor laser with delayed optoelectronic feedback is proposed and investigated. The system’s characteristics (memory capacity, computational ability) and error, and performance at solving the chaotic time series prediction task are evaluated. The asymmetry in the system’s characteristics with relation to the feedback sign is demonstrated. (Optics Letters. 2020. Vol. 45. No. 22. pp. 6150-6153)
  4. Dynamical regimes of a frequency-swept laser subject to optical feedback were investigated. The possibility of mode-locked pulses and two-mode beating operation regimes was demonstrated. The areas of these regimes’ stability were defined. (Optics Letters. 2019. Vol. 44. No. 21. pp. 5161-5164)
  5. A delay differential equation model for a hybrid laser with a nonlinear amplifying loop mirror (NALM) was proposed and investigated. The control of the laser nonlinearity based on the NALM semiconductor optical amplifier injection current variation was demonstrated. The appearance of optical square waves and their harmonics and switching between different laser generation regimes was demonstrated. This was experimentally confirmed on the basis of the laser with the integrated spiral waveguide. (Optics Express. 2019. Vol. 27. No. 18. pp. 25251-25264)
Code of the subject area of the PhD program
03.06.01 Physics and astronomy