Dr. Dmitry Kazakov Profile

Dr. Dmitry Kazakov

at Harvard John A Paulson School of Engineering and Applied Sciences

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Author

Publications (16)

Proceedings Article | 13 March 2024 Presentation

Bright-dark solitons in a hybridized frequency comb

Theodore Letsou, Dmitry Kazakov, Pawan Ratra, Lorenzo Columbo, Sandro Dal Cin, Nikola Opacak, Marco Piccardo, Benedikt Schwarz, Federico Capasso

Proceedings Volume PC12905, PC1290509 (2024) https://doi.org/10.1117/12.3016806

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Proceedings Article | 13 March 2024 Presentation

Nonlinear mid-infrared photonics with active resonators

Dmitry Kazakov, Theodore Letsou, Pawan Ratra, Marco Piccardo, Lorenzo Columbo, Massimo Brambilla, Franco Prati, Sandro Dal Cin, Maximillian Beiser, Nikola Opacak, Michael Pushkarsky, David Caffey, Timothy Day, Luigi Lugiato, Benedikt Schwarz, Federico Capasso

Proceedings Volume PC12905, PC1290508 (2024) https://doi.org/10.1117/12.3003043

KEYWORDS: Mid-IR, Photonics, Tunable filters, Solitons, Semiconductors, Phase shifts, Optical resonators, Nonlinear optics, Nonlinear filtering, Resonators

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Proceedings Article | 9 March 2024 Presentation

Nozaki-Bekki optical solitons

Benedikt Schwarz, Nikola Opacak, Dmitry Kazakov, Lorenzo Columbo, Maximillian Beiser, Theodore Letsou, Florian Pilat, Massimo Brambilla, Franco Prati, Marco Piccardo, Federico Capasso

Proceedings Volume PC12895, PC128950M (2024) https://doi.org/10.1117/12.3003819

KEYWORDS: Optical solitons, Solitons, Semiconductor lasers, Quantum cascade lasers, Microresonators, Spectroscopy, Quantum systems, Quantum signals, Quantum sensing, Quantum optics applications

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Proceedings Article | 5 October 2023 Presentation

Point singularity array with metasurfaces for blue-detuned atomic traps

Soon Wei Daniel Lim, Joon-Suh Park, Dmitry Kazakov, Christina Spaegele, Ahmed Dorrah, Maryna Meretska, Federico Capasso

Proceedings Volume PC12649, PC126490U (2023) https://doi.org/10.1117/12.2676740

KEYWORDS: Spiral phase plates, Super resolution, Wave propagation, Titanium dioxide, Optical vortices, Optical tweezers, Optical imaging, Miniaturization, Microscopes, Light-matter interactions

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Proceedings Article | 17 March 2023 Presentation

Ring quantum cascade lasers as versatile photonic components for the mid-infrared

Dmitry Kazakov, Theodore Letsou, Nikola Opačak, Maximillian Beiser, Sandro Dal Cin, Lorenzo Columbo, Massimo Brambilla, Franco Prati, Luigi Lugiato, Marco Piccardo, Benedikt Schwarz, Federico Capasso

Proceedings Volume PC12440, PC124400I (2023) https://doi.org/10.1117/12.2647068

KEYWORDS: Quantum cascade lasers, Mid-IR, Molecular spectroscopy, Wavelength division multiplexing, Tunable filters, Transceivers, Spectroscopy, Spectrometers, Optical amplifiers, Molecular photonics

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Proceedings Article | 17 March 2023 Presentation

Quantum cascade laser frequency combs induced by a giant Kerr nonlinearity

B. Schwarz, N. Opacak, F. Pilat, D. Kazakov, S. Dal Cin, M. Beiser, L. Columbo, J. Hillbrand, M. Piccardo, F. Capasso

Proceedings Volume PC12440, PC124400F (2023) https://doi.org/10.1117/12.2651688

KEYWORDS: Quantum cascade lasers, Frequency combs, Semiconductor lasers, Nonlinear optics

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Proceedings Article | 17 March 2023 Presentation

Parametric processes and nonlinear dynamics of self-starting frequency combs

Nikola Opačak, Dmitry Kazakov, Lorenzo Columbo, Maximilian Beiser, Florian Pilat, Massimo Brambilla, Franco Prati, Marco Piccardo, Federico Capasso, Benedikt Schwarz

Proceedings Volume PC12440, PC124400G (2023) https://doi.org/10.1117/12.2651256

KEYWORDS: Frequency combs, Nonlinear dynamics, Semiconductor lasers, Quantum cascade lasers, Fluorescence correlation spectroscopy, Spectroscopy, Mode locking, Microresonators, Laser applications, Fabry–Perot interferometers

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Proceedings Article | 17 March 2023 Presentation

Solitary structures and optical frequency combs in a ring quantum cascade laser

Lorenzo Luigi Columbo, Massimo Brambilla, Franco Prati, Nikola Opacak, Dmitry Kazakov, Marco Piccardo, Benedikt Schwarz, Luigi Lugiato, Federico Capasso

Proceedings Volume PC12440, PC124400J (2023) https://doi.org/10.1117/12.2650677

KEYWORDS: Quantum cascade lasers, Frequency combs, Wireless communications, Spectroscopy, Solitons

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Proceedings Article | 25 May 2022 Presentation

The linewidth enhancement factor of a semiconductor frequency comb: a spectrally-resolved measurement technique

Florian Pilat, Nikola Opačak, Dmitry Kazakov, Sandro Dal Cin, Federico Capasso, Gottfried Strasser, Benedikt Schwarz

Proceedings Volume PC12141, PC121410C (2022) https://doi.org/10.1117/12.2621511

KEYWORDS: Frequency combs, Semiconductors, Modulation, Semiconductor lasers, FT-IR spectroscopy, Surgery, Spectroscopy, Quantum well infrared photodetectors, Quantum cascade lasers, Phase shift keying

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Semiconductor lasers are compact, electrically pumped sources of coherent light. If designed properly they emit frequency combs, which nowadays find application in various areas such as telecommunications, metrology and high-precision spectroscopy for chemical sensing and medical diagnostics. Laser design and optimization require profound knowledge of the working principles at play and powerful techniques to infer their characteristics. One of these characteristic quantities is the linewidth enhancement factor (LEF). It originates from a theoretical description of the linewidth broadening beyond the Shawlow-Townes-limit, but is recently moving in the spotlight of frequency comb research to understand dynamic processes like modulation response, comb formation and even soliton generation. However, as of yet the experimental investigation of the LEF was limited to single-mode laser operation or measurements below to the lasing threshold. This is insufficient, since the LEF changes drastically with the laser bias and is dependent on the wavelength. In this work we present a novel technique which enables the spectrally-resolved measurement of the LEF of an arbitrary laser source regardless of the operation state or bias. It relies on the RF modulation of the driving bias and “Shifted Wave Interference Fourier Transform Spectroscopy” (SWIFTS) – a phase-sensitive measurement scheme. When investigating a laser frequency comb, a single-shot measurement reveals the spectral dependence of the LEF over the whole comb spectrum. Extensive simulations utilizing a numerical spatiotemporal model based on the Maxwell–Bloch formalism were performed to explore the success of this approach. The technique was vastly tested by simulating both, single-mode lasers and laser frequency combs. A comparison to the theoretical model shows good agreement. The experimental demonstration of the technique is performed on a quantum cascade laser (QCL) frequency comb. The resulting LEF values are comparable to recent publications and follow the spectral shape predicted by the theoretical model.

Proceedings Article | 24 May 2022 Presentation

Frequency comb operation induced by a giant Kerr nonlinearity in quantum cascade lasers

Benedikt Schwarz, Nikola Opacak, Florian Pilat, Dmitry Kazakov, Sandro Dal Cin, Maximilian Beiser, Lorenzo Columbo, Johannes Hillbrand, Marco Piccardo, Federico Capasso

Proceedings Volume PC12131, PC121310C (2022) https://doi.org/10.1117/12.2621685

KEYWORDS: Quantum cascade lasers, Frequency combs, Ultrafast phenomena, Turbulence, Spectroscopy, Solitons, Semiconductor lasers, Nonlinear optics

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Proceedings Article | 9 March 2022 Presentation

Frequency combs in ring quantum cascade lasers

Dmitry Kazakov, Maximilian Beiser, Nikola Opacak, Yiyang Zhi, Massimo Brambilla, Lorenzo Columbo, Benedikt Schwarz, Alexey Belyanin, Marco Piccardo, Federico Capasso

Proceedings Volume PC12021, PC1202108 (2022) https://doi.org/10.1117/12.2609111

KEYWORDS: Quantum cascade lasers, Frequency combs, Solitons, Resonators

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Proceedings Article | 1 August 2021 Presentation

External cavity lasers based on wide-angle multifunctional metasurfaces

Christina Spaegele, Michele Tamagnone, Dmitry Kazakov, Marcus Ossiander, Marco Piccardo, Federico Capasso

Proceedings Volume 11795, 1179519 (2021) https://doi.org/10.1117/12.2594753

KEYWORDS: Paraxial approximations, Semiconductor lasers, Optical design, Holography, Fourier optics

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Proceedings Article | 5 March 2021 Presentation

Frequency comb seeding of a single-mode near-infrared semiconductor laser

Jan Lautenschläger, Dominik Auth, Christoph Weber, Leonhard Wegert, Dmitry Kazakov, Andreas Klehr, Andrea Knigge, Johannes Hillbrand, Benedikt Schwarz, Federico Capasso, Stefan Breuer

Proceedings Volume 11705, 1170504 (2021) https://doi.org/10.1117/12.2578982

KEYWORDS: Frequency combs, Radio optics, Semiconductor lasers, Laser optics, Mode locking, Imaging systems, Spectroscopy, Singular optics, Quantum wells, Quantum optics

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Proceedings Article | 5 March 2021 Presentation

Harmonic mode-locking order and pulse width control of an amplitude-modulated frequency comb by optical self-injection

Stefan Meinecke, Dominik Auth, Marcus Ossiander, Dmitry Kazakov, Christoph Weber, Lina Jaurigue, Andreas Klehr, Andrea Knigge, Federico Capasso, Kathy Lüdge, Stefan Breuer

Proceedings Volume 11705, 117050A (2021) https://doi.org/10.1117/12.2579149

KEYWORDS: Mode locking, Semiconductor lasers, Quantum wells, Laser optics, Radio optics, Quantum chaos, Free space optics, Picosecond phenomena, Laser resonators, Chaos

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Proceedings Article | 5 March 2021 Presentation

How a near-infrared frequency-modulated semiconductor comb laser turns into an amplitude-modulated comb

Leonard Wegert, Dmitry Kazakov, Marcus Ossiander, Dominik Auth, Johannes Hillbrand, Vladimir Korenev, Artem Savelyev, Mikhail Maximov, Alexey Zhukov, Benedikt Schwarz, Luke Lester, Federico Capasso, Stefan Breuer

Proceedings Volume 11705, 1170507 (2021) https://doi.org/10.1117/12.2579160

KEYWORDS: Semiconductor lasers, Semiconductors, Laser optics, Phase measurement, Frequency combs, Quantum dot lasers, Continuous wave operation

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Proceedings Article | 5 March 2021 Presentation

Manipulating frequency comb regimes in semiconductor ring lasers

Dmitry Kazakov, Marco Piccardo, Benedikt Schwarz, Nikola Opacak, Maximilian Beiser, Yongrui Wang, Shantanu Jha, Michele Tamagnone, Johannes Hillbrand, Lorenzo Columbo, Alexey Belyanin, Federico Capasso

Proceedings Volume 11705, 117050R (2021) https://doi.org/10.1117/12.2577301

KEYWORDS: Semiconductor lasers, Frequency combs, Semiconductors, Quantum cascade lasers, Hole burning spectroscopy

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Showing 5 of 16 publications

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