Dr. Anton V. Kovalev Profile

Dr. Anton V. Kovalev

at ITMO Univ

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 25 May 2022 Presentation

Processing capabilities and low-pass filtering effect in a delay-based photonic reservoir computer

Gleb Danilenko, Anton Kovalev, Alexandre Locquet, Damien Rontani, Evgeny Viktorov

Proceedings Volume PC12141, PC1214102 (2022) https://doi.org/10.1117/12.2622347

KEYWORDS: Linear filtering, Optical filters, Optical computing, Optoelectronics, Semiconductor lasers, Nonlinear filtering, Neural networks, Feedback loops, Dynamical systems, Bandpass filters

Read Abstract +

Proceedings Article | 20 May 2022 Presentation + Paper

Optical square waves in a multiquantum-well laser with nonlinear optoelectronic feedback

Md Shariful Islam, A. V. Kovalev, E. A. Viktorov, D. S. Citrin, A. Locquet

Proceedings Volume 12141, 1214103 (2022) https://doi.org/10.1117/12.2624503

KEYWORDS: Optoelectronics, Semiconductor lasers, Optical amplifiers, Feedback signals, Feedback loops, Nonlinear optics, Electronic filtering, Amplifiers

Read Abstract +

Proceedings Article | 5 March 2021 Presentation

Effect of feedback on multi-section semiconductor swept-source laser for OCT applications

Aritra Roy, Saroj Kanta Patra, Svetlana Slepneva, Anton Kovalev, Konstantin Grigorenko, Natalia Rebrova, Alexis Verschelde, Amy Roche, Mathias Marconi, Massimo Giudici, Evgeny Viktorov, Tomasz Piwonski, Guillaume Huyet

Proceedings Volume 11680, 116800P (2021) https://doi.org/10.1117/12.2578233

KEYWORDS: Semiconductor lasers, Optical coherence tomography, Semiconductors, Laser applications, Mode locking, Nonlinear optics, Medical diagnostics, Laser sources, Inspection

Read Abstract +

Proceedings Article | 5 March 2021 Presentation + Paper

The formation of localised structures from the turn on transient of a long laser

Amy Roche, Uday Gowda, Anton Kovalev, Evgeny Viktorov, Alexander Pimenov, Andrei Vladimirov, Mathias Marconi, Massimo Giudici, Guillaume Huyet, Svetlana Slepneva

Proceedings Volume 11680, 116800N (2021) https://doi.org/10.1117/12.2578648

KEYWORDS: Turbulence, Tunable lasers, Tunable filters, Semiconductor optical amplifiers, Semiconductor lasers, Optical isolators, Optical filters, Interferometers, Electronic filtering, Differential equations

Read Abstract +

Proceedings Article | 5 March 2021 Presentation + Paper

Defect mediated turbulence in a long laser

Amy Roche, Svetlana Slepneva, Uday Gowda, Anton Kovalev, Evgeny Viktorov, Alexander Pimenov, Andrei Vladimirov, Mathias Marconi, Massimo Giudici, Guillaume Huyet

Proceedings Volume 11671, 116710D (2021) https://doi.org/10.1117/12.2578727

KEYWORDS: Solitons, Turbulence, Optical filters, Tunable lasers, Tunable filters, Semiconductor lasers, Optical turbulence, Laser damage threshold, Laser based displays, Semiconductor optical amplifiers

Read Abstract +

Proceedings Article | 1 April 2020 Presentation + Paper

Relaxation oscillations suppression and undamping in a hybrid photonic crystal laser

Anton Kovalev, Sharon Butler, Andrei Bakoz, Stephen Hegarty, Liam O’Faolain, Evgeny Viktorov

Proceedings Volume 11356, 113560P (2020) https://doi.org/10.1117/12.2556531

KEYWORDS: Photonic crystals, Semiconductor lasers, Laser resonators, Silicon, Silicon photonics, Hybrid silicon lasers

Read Abstract +

As demand towards cloud-based services and high-performance computations grows, it imposes requirements on data center performance, and efficiency. Taking advantage of the mature CMOS process technology, and the fact that silicon is the basic material of electronics industry, silicon photonics makes possible production photonic integrated circuits that satisfy these requirements. Here we explore the short-cavity hybrid laser consisting of a III-V amplifier integrated with a silicon photonic crystal (PhC) cavity reflector by so-called butt-coupling approach. The laser possesses great stability characteristics meeting the criteria for data center interconnect applications. The PhC reflector having a Q-factor of 10⁴ at the lasing wavelength 1535 nm can be considered as a narrow-bandwidth filter. The laser demonstrates single mode and eventless operation without any dynamics on the background, and smooth radiofrequency spectrum without evidence of relaxation oscillation frequency. The latter fact is beneficial for many applications, and indicates extremely high damping in PhC laser, where the photon cavity lifetime is greatly improved by the high-Q PhC cavity reflector. We confirm our experimental observations by theory based on delay differential equation model for a single-section semiconductor laser. We reveal the effective damping of the laser, when the detuning between the filter peak and the laser cavity mode is small, and the imaginary parts of the model eigenvalues equal zero. It is possible to undamp the relaxation oscillations forcing self-Q-switched operation in the laser owing to the cumulative action of the alpha-factor and the narrow filter. In conclusion, we experimentally and theoretically demonstrated that relaxation oscillations can be suppressed in the short-cavity semiconductor laser with a narrow intracavity frequency filter. Additionally, on the basis of our analysis we expect the undamping of relaxation oscillations, and self-pulsations when the cavity mode is detuned from the filter peak frequency. The results might be useful for applications in data communications.

Proceedings Article | 1 April 2020 Presentation + Paper

Predicting chaotic time series using optoelectronic feedback laser

Pavel Dmitriev, Anton Kovalev, Alexandre Locquet, David Citrin, Evgeny Viktorov, Damien Rontani

Proceedings Volume 11356, 113560U (2020) https://doi.org/10.1117/12.2556368

KEYWORDS: Optoelectronics, Optical filters, Semiconductor lasers, Electronic filtering, Feedback loops, Positive feedback, Modulation, Optical computing, Computing systems

Read Abstract +

Proceedings Article | 2 March 2020 Paper

A highly coherent multi-section semiconductor swept source OCT laser

Svetlana Slepneva, Anton Kovalev, Aritra Roy, Saroj Kanta Patra, Konstantin Grigorenko, Natalia Rebrova, Alexis Verschelde, Patrice Camelin, Amy Roche, Mathias Marconi, Massimo Giudici, Evgeny Viktorov, Tomasz Piwonski, Guillaume Huyet

Proceedings Volume 11274, 112742A (2020) https://doi.org/10.1117/12.2545873

KEYWORDS: Semiconductor lasers, Optical coherence tomography, Tunable lasers, Mirrors, Semiconductors, Laser applications, Laser stabilization, Feedback loops, Coherence (optics), Laser optics

Read Abstract +

Proceedings Article | 2 March 2020 Paper

Turn on transient in a long cavity laser

Amy Roche, Uday Gowda, Alexander Pimenov, Anton Kovalev, Mathias Marconi, Massimo Giudici, Evgeny Viktorov, Andrei Vladimirov, Guillaume Huyet, Svetlana Slepneva

Proceedings Volume 11274, 112740L (2020) https://doi.org/10.1117/12.2545965

KEYWORDS: Semiconductor lasers, Laser resonators, Fiber lasers, Continuous wave operation, Polarization, Electronic filtering, Modulation, Fabry–Perot interferometers, Differential equations, Mode locking

Read Abstract +

Proceedings Article | 26 February 2019 Presentation + Paper

Coexisting periodic regimes in semiconductor lasers with optical feedback

Michael Wishon, Anton Kovalev, Daeyoung Choi, David Citrin, Evgeny Viktorov, Alexandre Locquet

Proceedings Volume 10912, 109120O (2019) https://doi.org/10.1117/12.2510499

KEYWORDS: Semiconductor lasers, Laser optics, Quantum wells, Wave plates, Feedback loops

Read Abstract +

Proceedings Article | 26 February 2019 Paper

Saturation effects in nonlinear loop mirror lasers: square wave operation

Anton Kovalev, Evgeny Viktorov, Natalia Rebrova, Uday Gowda, Andrei Vladimirov, Guillaume Huyet

Proceedings Volume 10912, 109121M (2019) https://doi.org/10.1117/12.2510528

KEYWORDS: Mode locking, Pulsed laser operation, Semiconductor lasers, Laser optics, Nonlinear optics, Photonics, Nonlinear dynamics

Read Abstract +

Proceedings Article | 9 May 2018 Presentation + Paper

Feedback-induced discretisation of the relaxation oscillation frequency in a semiconductor laser

Anton Kovalev, Bogusław Tykalewicz, David Goulding, Bryan Kelleher, Michael Wishon, Alexandre Locquet, David Citrin, Evgeny Viktorov

Proceedings Volume 10682, 106821I (2018) https://doi.org/10.1117/12.2307393

KEYWORDS: Semiconductor lasers, Quantum dot lasers, Laser resonators, Laser optics, Indium arsenide, Differential equations, Quantum dots

Read Abstract +

Proceedings Article | 9 May 2018 Paper

Theoretical study of mode-locked lasers with nonlinear loop mirrors

Anton Kovalev, Evgeny Viktorov, Natalia Rebrova, Andrei Vladimirov, Guillaume Huyet

Proceedings Volume 10682, 1068226 (2018) https://doi.org/10.1117/12.2307620

KEYWORDS: Mode locking, Semiconductor lasers, Differential equations, Solitons

Read Abstract +

Proceedings Article | 14 March 2018 Presentation

Optical square waves from a nonlinear amplifying loop mirror laser (Conference Presentation)

A. Aadhi, Anton Kovalev, Michael Kues, Piotr Roztocki, Christian Reimer, Young Zhang, Tao Wang, Brent Little, Sai Chu, David Moss, Zhiming Wang, Evgeny Viktorov, Roberto Morandotti

Proceedings Volume 10518, 105180M (2018) https://doi.org/10.1117/12.2291230

KEYWORDS: Mode locking, Semiconductor lasers, Nonlinear optics, Mirrors, Nonlinear optical glasses, Microresonators, Microrings, Resonators, Signal processing, Optical communications

Read Abstract +

Proceedings Article | 17 February 2017 Paper

Highly stable RF signal from a mode-locked laser stabilized to multiple saturated absorption lines

Anton Kovalev, Alexander Uskov, Vadim Polyakov

Proceedings Volume 10082, 100821Z (2017) https://doi.org/10.1117/12.2251527

KEYWORDS: Absorption, Mode locking, Laser stabilization, Iodine, Neodymium lasers, Second-harmonic generation, Modulation, Crystals, Laser crystals, Semiconductor lasers, Mirrors

Read Abstract +

Proceedings Article | 17 February 2017 Paper

Pulse-burst Er:glass laser

Vladimir Vitkin, Olga Dymshits, Vadim Polyakov, Alexander Zhilin, Darya Shemchuk, Alexandr Krylov, Alexander Uskov, Andrey Mak, Anton Kovalev

Proceedings Volume 10082, 1008224 (2017) https://doi.org/10.1117/12.2252107

KEYWORDS: Cobalt, Erbium lasers, Q switching, Q switches, Nanocrystals, Optical properties, Erbium, Ytterbium, Ions, Pulsed laser operation, Laser damage threshold, Crystals, Modes of laser operation

Read Abstract +

Proceedings Article | 29 April 2016 Paper

Long-distance eye-safe laser TOF camera design

Anton Kovalev, Vadim Polyakov, Vyacheslav Buchenkov

Proceedings Volume 9896, 989617 (2016) https://doi.org/10.1117/12.2227764

KEYWORDS: Readout integrated circuits, Short wave infrared radiation

Read Abstract +

Proceedings Article | 27 April 2016 Paper

Optimal pumping for eye-safe Er:YAG laser

Vyacheslav Buchenkov, Vadim Polyakov, Andrey Rodionov, Anton Kovalev

Proceedings Volume 9893, 98930Y (2016) https://doi.org/10.1117/12.2227806

KEYWORDS: Erbium, Absorption, Q switched lasers, Er:YAG lasers, Solid state lasers, Optical pumping, Radiation effects, Reflectors, Output couplers, Crystals

Read Abstract +

Proceedings Article | 4 March 2016 Paper

Diffraction patterns from multiple tilted laser apertures: numerical analysis

Anton Kovalev, Vadim Polyakov

Proceedings Volume 9742, 97420P (2016) https://doi.org/10.1117/12.2210840

KEYWORDS: Amplifiers, Oscillators, Optical amplifiers, Modulation, Convolution, Laser systems engineering

Read Abstract +

Proceedings Article | 20 February 2015 Paper

Mode-locking in intracavity frequency doubled Nd:YVO4 laser

Anton Kovalev, Vadim Polyakov, Andrey Mak, Oleg Orlov, Sergey Alexeev, Vladimir Vitkin

Proceedings Volume 9342, 93421M (2015) https://doi.org/10.1117/12.2077603

KEYWORDS: Ferroelectric materials, Mode locking, Crystals, Neodymium lasers, Modulation, Output couplers, Laser crystals, Optical filtering, Refractive index, Harmonic generation

Read Abstract +

Proceedings Article | 1 May 2014 Paper

A new RF frequency standard design based on a beat note between longitudinal modes of a frequency locked CW-laser

Vadim Polyakov, Evgeny Viktorov, Anton Kovalev, Oleg Orlov

Proceedings Volume 9135, 913509 (2014) https://doi.org/10.1117/12.2051927

KEYWORDS: Iodine, Absorption, Molecular lasers, Mode locking, Standards development, Ferroelectric materials, Neodymium lasers, Iodine cells, Crystals, Laser stabilization

Read Abstract +

Showing 5 of 21 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years