Zobrazeno 1 - 10
of 291
pro vyhledávání: '"Churkin, A. V."'
Autor:
Peng, Junsong, Zhao, Zihan, Boscolo, Sonia, Finot, Christophe, Sugavanam, Srikanth, Churkin, Dmitry V., Zeng, Heping
Breathing solitons are nonlinear waves in which the energy concentrates in a localized and oscillatory fashion. Similarly to stationary solitons, breathers in dissipative systems can form stable bound states displaying molecule-like dynamics, which a
Externí odkaz:
http://arxiv.org/abs/2103.16740
Publikováno v:
Optics Express 28, 30340-30348 (2020)
We present a systematic analysis of the stationary regimes of nonlinear parity-time(PT) symmetric laser composed of two coupled fiber cavities. We find that power-dependent nonlinear phase shifters broaden regions of existence of both PT-symmetric an
Externí odkaz:
http://arxiv.org/abs/2005.07636
Temporal variation of the spectrum of continuously-pumped random fiber laser. Phenomenological model
Publikováno v:
JOSA B 36(2), 408 (2019)
A temporal variation of a spectrum of excited modes in a continuously pumped erbium-doped random fiber laser (RFL), based on randomly distributed Bragg gratings, is studied. Developed phenomenological theoretical model assumes hard excitation mechani
Externí odkaz:
http://arxiv.org/abs/1810.02093
Publikováno v:
Scientific Reports 9, 3464 (2019)
We predict a generic mechanism of wave localization at an interface between uniform gauge fields, arising due to propagation-dependent phase accumulation similar to Aharonov-Bohm phenomenon. We realize experimentally a photonic mesh lattice with real
Externí odkaz:
http://arxiv.org/abs/1806.05278
Publikováno v:
Phys. Rev. Lett. 120, 213902 (2018)
We predict the onset of self-induced parametric or Faraday instabilities in a laser, spontaneously induced by the presence of pump depletion in the cavity, which leads to a periodic gain landscape for light propagating in the cavity. As a result of t
Externí odkaz:
http://arxiv.org/abs/1712.06625
Publikováno v:
Phys. Rev. Lett. 116, 028701 (2016)
Nonlinear instabilities are responsible for spontaneous pattern formation in a vast number of natural and engineered systems ranging from biology to galaxies build-up. We propose a new instability mechanism leading to pattern formation in spatially e
Externí odkaz:
http://arxiv.org/abs/1512.03482
Fiber lasers operating via Raman gain or based on rare-earth doped active fibers are widely used as sources of CW radiation. However these lasers are only quasi-CW: their intensity fluctuates strongly on short time-scales. Here the framework of the c
Externí odkaz:
http://arxiv.org/abs/1506.05265
Autor:
Aragoneses, Andres, Carpi, Laura, Tarasov, Nikita, Churkin, Dmitry V., Torrent, M. C., Masoller, Cristina, Turitsyn, Sergei K.
Publikováno v:
Phys. Rev. Lett. 116, 033902 (2016)
We use advanced statistical tools of time-series analysis to characterize the dynamical complexity of the transition to optical wave turbulence in a fibre laser. Ordinal analysis and the horizontal visibility graph applied to the experimentally measu
Externí odkaz:
http://arxiv.org/abs/1505.07365
Akademický článek
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Autor:
Turitsyna, E. G., Smirnov, S. V., Sugavanam, S., Tarasov, N., Shu, X., Babin, S. A., Podivilov, E. V., Churkin, D. V., Falkovich, G., Turitsyn, S. K.
Publikováno v:
Nature Photonics 7, 783-786 (2013)
Studying transition to a highly disordered state of turbulence from a linearly stable coherent laminar state is conceptually and technically challenging and immensely important, e.g. all pipe and channel flows are of that type. In optics, understandi
Externí odkaz:
http://arxiv.org/abs/1401.0630