Prof. Mikhail L. Gorodetsky Profile

Prof. Mikhail L. Gorodetsky

Deceased at Russian Quantum Ctr

SPIE Involvement:

Author

Publications (17)

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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Proceedings Article | 4 March 2019 Presentation + Paper

Multiplexing soliton-combs in optical microresonators

Erwan Lucas, Grigory Lihachev, Romain Bouchand, Nikolay Pavlov, Arslan Raja, Maxim Karpov, Michael Gorodetsky, Tobias Kippenberg

Proceedings Volume 10904, 109040O (2019) https://doi.org/10.1117/12.2506498

KEYWORDS: Solitons, Microresonators, Multiplexing, Frequency combs, Intermodulation, Heterodyning, Spectroscopy, Resonators, Modulation

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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 | 21 April 2017 Presentation

Soliton dynamics in optical micro resonators (Conference Presentation)

Maxim Karpov, Hairun Guo, Erwan Lucas, Victor Brasch, Martin H. Pfeiffer, John Jost, Michael Gorodetsky, Tobias Kippenberg

Proceedings Volume 10090, 100900C (2017) https://doi.org/10.1117/12.2254846

KEYWORDS: Solitons, Microresonators, Frequency combs, Frequency metrology, Optical spectroscopy, Spectroscopy, Optical communications, Ultrafast phenomena, Nonlinear optics, Optical fibers

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Proceedings Article | 21 April 2017 Presentation

Kerr combs in microresonators: from chaos to solitons and from theory to experiment (Conference Presentation)

Michael Gorodetsky, Valery Lobanov, Grigory Lihachev, Nikolay Pavlov, Sergey Koptyaev

Proceedings Volume 10090, 100900H (2017) https://doi.org/10.1117/12.2251506

KEYWORDS: Quantum chaos, Quantum physics, Solitons, Microresonators, Frequency combs, Chaos, Photonics, Four wave mixing, Modulation, Numerical analysis

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Proceedings Article | 3 August 2016 Presentation

Chipscale optical frequency combs: from soliton physics to coherent communication (Conference Presentation)

Victor Brasch, Michael Geiselmann, Tobias Herr, Grigoriy Lihachev, Martin H. Pfeiffer, Michael Gorodetsky, Tobias Kippenberg

Proceedings Volume 9900, 99000Z (2016) https://doi.org/10.1117/12.2231293

KEYWORDS: Frequency combs, Solitons, Resonators, Dispersion, Waveguides, Microresonators, Physics, Computer simulations, Optical communications, Silicon

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In our experiment we use silicon nitride waveguides embedded in silicon dioxide on a silicon chip. The cross section of the waveguide is approximately 1.8µm width by 0.8µm height and the ring resonator has a radius of 120µm. This resonator is coupled to a bus waveguide that is used to couple the continuous wave pump light into the resonator and the light from the resonator out again. The pump laser is an amplified diode laser which provides around 2W of pump power in the bus waveguide on the photonic chip. If the pump light is in resonance with one of the resonances of the resonator we can generate a frequency comb from the pump light via the Kerr nonlinearity of the material. The spacing in between the lines of the frequency comb is close to the free spectral range of the resonator, which is 190 GHz for the resonator used. By tuning the pump laser through the resonance and modulating the power of the pump light we can achieve a stable state with a pulsed-shape waveform circulating inside the microresonator. These states are known as dissipative Kerr soliton states and they are solutions to the Lugiato-Lefever equation, which describes the nonlinear physics of the system. So far they had been experimentally demonstrated in fiber-ring cavities as well as crystalline microresonators. The main benefits of these states for Kerr frequency combs is that they allow for low-noise but broadband frequency combs with low modulation in the spectrum. In our case we report a 3-dB bandwidth of 10THz which is equivalent to sub-30fs pulses inside the resonator. Because of the chosen geometry of the waveguide cross section we also observe an effect which is caused by higher-order dispersion. Higher-order dispersion are terms that describe the dispersion beyond the quadratic group velocity dispersion. In order for dissipative Kerr solitons to form, anomalous group velocity dispersion is required. If higher-order terms are present as well, the soliton can still exist but additional dynamics come into play resulting in so called soliton Cherenkov radiation or a dispersive wave. In our measured spectrum this feature can be easily identified as a local maximum offset from the pump wavelength. In the time domain the soliton Cherenkov radiation manifests itself as an oscillating tail that is attached to the soliton pulse inside the microresonator. Using simulated values for the dispersion and coupled-mode equations to numerically simulate the physics inside the microresonator we can achieve a very good agreement between the experimentally observed and the simulated spectrum. In order to demonstrate that our frequency comb can be used for metrological applications we implement a full stabilization of the frequency comb and achieve a relative stability of 1e-15. Additionally we use the large bandwidth of 2/3 of an octave to implement a 2f-3f-scheme in order to monitor the carrier envelope offset of the frequency comb in a self-referenced manner. In summary we have observed for the first time a soliton-based, broadband frequency comb in integrated microresonators. These frequency combs are perfectly suited for spectroscopy and data communication applications.

Proceedings Article | 7 February 2012 Paper

Accurate analytical estimates of eigenfrequencies and dispersion in whispering-gallery spheroidal resonators

Michael Gorodetsky, Yuri Demchenko

Proceedings Volume 8236, 823623 (2012) https://doi.org/10.1117/12.914606

KEYWORDS: Resonators, Quantization, Statistical analysis, Bessel functions, Optical spheres, Frequency combs, Microresonators, Optimization (mathematics), Dielectrics, Numerical simulations

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Proceedings Article | 5 March 2008 Paper

Whispering gallery modes in axisymmetric resonators

Michael Gorodetsky, Aleksey Fomin

Proceedings Volume 7009, 70090I (2008) https://doi.org/10.1117/12.793335

KEYWORDS: Optical spheres, Dielectrics, Resonators, Spherical lenses, Optoelectronics, Transform theory, Phase shifts, Reflection, Silica, Nonlinear crystals

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Proceedings Article | 23 February 2006 Paper

Geometric optics of whispering gallery modes

Michael Gorodetsky, Aleksey Fomin

Proceedings Volume 6101, 61010X (2006) https://doi.org/10.1117/12.669591

KEYWORDS: Reflection, Optical spheres, Geometrical optics, Dielectrics, Spherical lenses, Transform theory, Neodymium, Finite element methods, Phase shifts, Quantization

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Proceedings Article | 7 October 2005 Paper

Spheroidal microresonators for the optoelectronics

Aleksey Fomin, Michael Gorodetsky

Proceedings Volume 5948, 594818 (2005) https://doi.org/10.1117/12.622302

KEYWORDS: Microresonators, Optical spheres, Optoelectronics, Electroluminescent displays, Spherical lenses, Dielectrics, Neodymium, Bessel functions, Sensors, Optical microcavities

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Proceedings Article | 1 June 2004 Paper

Nonstationary nonlinear effects in optical microspheres

Aleksey Fomin, Michael Gorodetsky, Ivan Grudinin, Vladimir Ilchenko

Proceedings Volume 5333, (2004) https://doi.org/10.1117/12.530657

KEYWORDS: Resonators, Nonlinear optics, Absorption, Silica, Thermal effects, Scattering, Thermography, Numerical modeling, Glasses, Optical spheres

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Proceedings Article | 25 June 2003 Paper

The measurement of thermo-refractive noise in microspheres

Mikhail Gorodetsky, Ivan Grudinin

Proceedings Volume 4969, (2003) https://doi.org/10.1117/12.478978

KEYWORDS: Calibration, Resonators, Electroluminescent displays, Silica, Fourier transforms, Neodymium, Frequency modulation, Estimation theory, Mirrors, Signal detection

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Proceedings Article | 24 April 2001 Paper

Thermorefractive noise in microspheres

Mikhail Gorodetsky

Proceedings Volume 4270, (2001) https://doi.org/10.1117/12.424667

KEYWORDS: Resonators, Refraction, Silica, Laser stabilization, Refractive index, Optical spheres, Lead, Mirrors, Information operations, Dielectrics

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Proceedings Article | 24 May 1999 Paper

Intracavity Rayleigh scattering in microspheres: limits imposed on quality factor and mode coupling

Mikhail Gorodetsky, Vladimir Ilchenko, Andrew Pryamikov

Proceedings Volume 3611, (1999) https://doi.org/10.1117/12.349278

KEYWORDS: Scattering, Rayleigh scattering, Silica, Backscatter, Laser scattering, Optical spheres, Signal attenuation, Resonators, Surface roughness, Reflection

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Proceedings Article | 13 May 1998 Paper

Optical microsphere resonators: optimal coupling and the ultimate Q

Mikhail Gorodetsky, Anatoly Savchenkov, Vladimir Ilchenko

Proceedings Volume 3267, (1998) https://doi.org/10.1117/12.308113

KEYWORDS: Resonators, Optical spheres, Prisms, Waveguides, Silica, Near field optics, Energy efficiency, Mirrors, Fabry–Perot interferometers, Scattering

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