Dr. Nikita M. Kondratiev Profile

Dr. Nikita M. Kondratiev

Senior Researcher at Technology Innovation Institute

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Author

Publications (18)

Proceedings Article | 28 November 2023 Paper

Thermal mode decomposition method for microresonator thermal parameters estimation

Vladislav Pavlov, Nikita Kondratyev, Artem Shitikov, Valery Lobanov

Proceedings Volume 12773, 127730O (2023) https://doi.org/10.1117/12.2686746

KEYWORDS: Microresonators, Thermal effects, Modal decomposition, Quantum numbers, Thermography, Thermal optics, Solitons, Radio propagation, Quantum processes, Quantum light generation

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Proceedings Article | 28 November 2023 Paper

Side lobe suppression analysis of spiral array optical antenna

Nikita Kondratiev, Marcus Engsig, Evgeny Lonshakov, Chaouki Kasmi, Steevy Cordette

Proceedings Volume 12764, 127640T (2023) https://doi.org/10.1117/12.2687176

KEYWORDS: Optical arrays, Optical antennas, Antennas, Aliasing, Phased array optics, Astronomical imaging, Remote sensing, Phased arrays, Optical communications, Design and modelling

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Proceedings Article | 27 November 2023 Paper

Back facet coupled self-injection locking of laser to whispering-gallery-mode microresonator

Ramzil Galiev, Nikita Kondratiev, Evgeny Lonshakov, Ravi Saripalli, Chaouki Kasmi, Steevy Cordette

Proceedings Volume 12761, 1276104 (2023) https://doi.org/10.1117/12.2687661

KEYWORDS: Microresonators, Laser stabilization, Laser frequency, Laser applications, Laser optics

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Proceedings Article | 4 January 2023 Poster + Presentation + Paper

Numerical simulation of pump power-induced heating processes in silicon nitride photonic chips

Vladislav Pavlov, Nikita Kondratyev, Steevy Cordette, Valery Lobanov

Proceedings Volume 12322, 123220W (2023) https://doi.org/10.1117/12.2640529

KEYWORDS: Microresonators, Silicon, Thermal effects, Numerical simulations, Waveguides, Silicon photonics, Finite element methods, Absorption, Resonators, Optics manufacturing

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Proceedings Article | 4 January 2023 Presentation + Paper

Kerr soliton comb generation efficiency in microresonators and microresonator coupling rate

Nikita Kondratiev, Valery Lobanov, Steevy Cordette, Igor Bilenko

Proceedings Volume 12323, 1232303 (2023) https://doi.org/10.1117/12.2644033

KEYWORDS: Solitons, Microresonators, Frequency combs, Numerical modeling, Analytics

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Proceedings Article | 27 December 2022 Presentation + Paper

The effect of multifrequency self-injection locking in the interaction of a semiconductor laser and a high-Q microcavity

Andrey Danilin, Nikita Kondratiev, Ramzil Galiev, Valery Lobanov, Igor Bilenko

Proceedings Volume 12311, 123110L (2022) https://doi.org/10.1117/12.2643658

KEYWORDS: Semiconductor lasers, Microresonators, Terahertz radiation, Optical microcavities

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Proceedings Article | 20 May 2022 Poster + Presentation + Paper

Strong-feedback regime of self-injection locking and external cavity laser

Nikita Kondratiev, Ramzil Galiev, Ilya Gorelov, Artem Shitikov, Valery Lobanov

Proceedings Volume 12141, 121410K (2022) https://doi.org/10.1117/12.2621209

KEYWORDS: Mirrors, Resonators, Reflectors, Microresonators, Semiconductor lasers, Diodes, Laser stabilization

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Proceedings Article | 4 March 2022 Presentation + Paper

Novel methods of platicon generation in optical microresonators: numerical study

Valery Lobanov, Nikita Kondratiev, Artem Shitikov, Ramzil Galiev, Kirill Min'kov, Igor Bilenko

Proceedings Volume 11987, 119870I (2022) https://doi.org/10.1117/12.2607363

KEYWORDS: Microresonators, Dispersion, Thermal effects, Frequency combs, Backscatter, Solitons, Nonlinear dynamics, Modulation, Resonators, Laser stabilization

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Proceedings Article | 9 October 2021 Poster + Paper

Dynamics of self-injection locked multimode diode laser

Ramzil Galiev, Nikita Kondratiev, Valery Lobanov, Igor Bilenko

Proceedings Volume 11891, 1189111 (2021) https://doi.org/10.1117/12.2600806

KEYWORDS: Semiconductor lasers, Microresonators, Resonators

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Proceedings Article | 18 April 2021 Presentation

Modelling of soliton and platicon generation in the self-injection locking regime

Nikita Kondratiev, Valery Lobanov, Evgeny Lonshakov, Nikita Dmitriev, Igor Bilenko

Proceedings Volume 11770, 117700F (2021) https://doi.org/10.1117/12.2588991

KEYWORDS: Solitons, Modeling, Dispersion, Process modeling, Laser stabilization, Frequency combs, Radio optics, Numerical simulations, Nonlinear dynamics, Microresonators

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Proceedings Article | 18 April 2021 Presentation + Paper

Thermal influence on laser self-injection locking to nonlinear microresonator

Nikita Kondratiev, Ramzil Galiev, Valery Lobanov

Proceedings Volume 11770, 117700Q (2021) https://doi.org/10.1117/12.2588931

KEYWORDS: Microresonators, Solitons, Thermal effects, Radio optics, Mode locking, Laser stabilization, Frequency combs

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Proceedings Article | 5 March 2021 Presentation + Paper

Optimization of the self-injection locking and resonator characterisation in this regime

Artem Shitikov, Ramzil Galiev, Nikita Kondratiev, Valery Lobanov, Kirill Min'kov, Andrej Matsko, Igor Bilenko

Proceedings Volume 11672, 116720G (2021) https://doi.org/10.1117/12.2578849

KEYWORDS: Resonators, Oscillators, Prisms, Microresonators, Laser stabilization, Photodetectors, Optical filters, Laser applications, Electronic filtering

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Proceedings Article | 16 October 2020 Poster + Presentation + Paper

Optimization of a frequency comb-based calibration of a tunable laser

Ramzil Galiev, Nikita Kondratiev, Valery Lobanov, Igor Bilenko

Proceedings Volume 11552, 115521J (2020) https://doi.org/10.1117/12.2574592

KEYWORDS: Tunable lasers, Calibration, Optical filters, Electronic filtering, Linear filtering, Tunable filters, Heterodyning, Interference (communication), Continuous wave operation, Bandpass filters

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Proceedings Article | 1 April 2020 Presentation

Self-injection locking of semiconductor laser diodes to integrated high-Q microresonators (Conference Presentation)

Andrey Voloshin, Sofya Agafonova, Nikita Kondratiev, Sergey Koptyaev, Maxim Ryabko, Stas Polonsky, Igor Bilenko

Proceedings Volume 11356, 113560D (2020) https://doi.org/10.1117/12.2555974

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The ultra-narrow linewidth diode lasers self-injection locked to high-Q crystalline microresonators are available commercially, providing the linewidth below 1 kHz for various wavelengths and enabling microcomb generation. Here we demonstrate a technique that allows applying this approach for photonic integrated chips containing microresonators and significantly narrow the laser diode (Fabry-Perot or DFB) linewidth due to self-injection locking to the silicon nitride (SiN) microresonator with high Q-factor. Considered laser diodes are CMOS-compatible, as well as integrated microresonators made of silicon nitride. This makes it possible to realize in the future large-scale production of laser devices based on microresonators. We stabilized the InGaAsP/InP Fabry-Perot (FP) laser diode (Seminex, 100 mW, 1535 nm, 20 nm spectral width) and the DFB laser (Nolatech Company, 1550 nm, output power up to 20 mW) by different silicon nitride microresonators with Q-factor higher than one million (LIGENTECH Company). Microresonators with different free spectral ranges (1 THz, 150 GHz, 35 GHz) allowed observing the different regime of operation, single frequency, and multi-frequency, when different laser diode lines are suppressed. The spectral linewidth of each locked line was better than 20 kHz (limited by Ref. laser). The developed technique allowed us to integrate different types of laser diodes with high-Q SiN microresonators and developed a fully integrated optical frequency comb source. We measured spectral characteristics (spectral linewidth, phase noises) of free running and locked states, the stabilization coefficient, and the locking range and compare these values to the theoretical estimations. We discuss requirements for the optical frequency comb generation in such systems and demonstrate measured spectra of optical combs. Also, we discuss possible applications of such system, operating in multi-frequency locking or comb regimes, and demonstrate the application for spectroscopy measurements.

Proceedings Article | 1 April 2020 Presentation + Paper

Two-color platicons in quadratically nonlinear optical microresonators

Valery Lobanov, Nikita Kondratiev, Artem Shitikov, Ramzil Galiev, Kirill Min'kov, Igor Bilenko

Proceedings Volume 11358, 113581I (2020) https://doi.org/10.1117/12.2555790

KEYWORDS: Dispersion, Microresonators, Modulation, Solitons, Second-harmonic generation, Frequency combs, Harmonic generation, Amplitude modulation, Numerical analysis

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Proceedings Article | 1 April 2020 Presentation + Paper

Numerical modelling of WGM microresonator Kerr frequency combs in self-injection locking regime

Nikita Kondratiev, Andrey Voloshin, Valery Lobanov, Igor Bilenko

Proceedings Volume 11358, 113580O (2020) https://doi.org/10.1117/12.2555863

KEYWORDS: Solitons, Microresonators, Frequency combs, Numerical modeling, Process modeling, Backscatter, Resonators

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Proceedings Article | 4 March 2019 Presentation + Paper

Experimental observation of above billion quality factor in silicon crystalline optical whispering gallery mode resonators

Igor Bilenko, Artem Shitikov, Valery Lobanov, Nikita Kondratiev, Andrey Voloshin, Michael Gorodetsky

Proceedings Volume 10904, 1090402 (2019) https://doi.org/10.1117/12.2508783

KEYWORDS: Silicon, Resonators, Absorption, Polishing, Crystals, Microresonators, Surface finishing, Crystal optics, Mid-IR

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Proceedings Article | 4 March 2019 Paper

Spectrum collapse, narrow lines, and soliton combs with multi-frequency laser diodes locked to optical microresonators

I. Bilenko, N. Kondratiev, V. Lobanov, R. Galiev, N. Pavlov, A. Voloshin, A. Gorodnitsky, S. Koptyaev, M. Gorodetsky

Proceedings Volume 10904, 109040K (2019) https://doi.org/10.1117/12.2508404

KEYWORDS: Semiconductor lasers, Microresonators, Solitons, Frequency combs, Laser applications, Resonators, Laser resonators, Laser optics, Laser stabilization

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Showing 5 of 18 publications

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