Parity-time symmetric laminar-turbulent transition in coupled Raman fiber lasers

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

Usually a laser is considered as a system that delivers a particular temporal dynamic generation regime, which can be tailored by means of cavity parameters or power. By introducing a concept of PT-symmetry, one can achieve different types of stationary regimes, for example, single-mode operation. In the present work we consider a coupled Raman fiber lasers interconnected by means of Mach-Zender interferometer. We numerically investigate such coupled fiber lasers within a full dynamical model based on nonlinear Schrödinger equation. Firstly, we show that nonlinearity induced phase stochasticity does not destroy PT-symmetry, but makes PT-symmetric regimes to exist in narrower region of parameters. We study dynamical properties of the generation regimes and find that depending on parameters (pump power and phase shift), different dynamical regimes have different parity-time properties. We show that by varying PT-properties one can switch between different dynamic regimes. We also show that if the pump power is fixed, and phase shift is changed from zero (a case of fully uncoupled cavities) to the maximum value, the laser transits from generation in PT-broken regime to a PT-symmetric generation. At the same time, the laser exhibits a simultaneous reverse transition from a turbulent to a laminar generation.

Язык оригиналаанглийский
Название основной публикацииNonlinear Optics and Applications XI
РедакторыMario Bertolotti, Alexei M. Zheltikov
ИздательSPIE
Число страниц6
ISBN (электронное издание)9781510627185
DOI
СостояниеОпубликовано - 1 янв 2019
СобытиеNonlinear Optics and Applications XI 2019 - Prague, Чехия
Продолжительность: 1 апр 20193 апр 2019

Серия публикаций

НазваниеProceedings of SPIE - The International Society for Optical Engineering
Том11026
ISSN (печатное издание)0277-786X
ISSN (электронное издание)1996-756X

Конференция

КонференцияNonlinear Optics and Applications XI 2019
СтранаЧехия
ГородPrague
Период01.04.201903.04.2019

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  • Цитировать

    Smirnov, S. V., Makarenko, M., Vatnik, I. D., & Churkin, D. V. (2019). Parity-time symmetric laminar-turbulent transition in coupled Raman fiber lasers. В M. Bertolotti, & A. M. Zheltikov (Ред.), Nonlinear Optics and Applications XI [110261F] (Proceedings of SPIE - The International Society for Optical Engineering; Том 11026). SPIE. https://doi.org/10.1117/12.2524882