Quasi-CW and pulsed generation in coupled Raman fiber lasers with PT symmetry

Dmitry V. Churkin; Sergey Smirnov

doi:10.1117/12.2621833

25 May 2022 Quasi-CW and pulsed generation in coupled Raman fiber lasers with PT symmetry

Dmitry V. Churkin, Sergey Smirnov

Proceedings Volume 12142, Fiber Lasers and Glass Photonics: Materials through Applications III; 121420Q (2022) https://doi.org/10.1117/12.2621833
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

We numerically consider the system of coupled Raman fiber lasers which depending on the phase shifts between coupled cavities can be operated either in PT-symmetric or PT-broken generation regime. Within the full dynamical model of coupled NLSE we plot the generation properties map over phase shifts and pump powers. We found different types of the generated radiation in both PT-symmetric and PT-broken phase: quasi-CW stochastic generation, generation of noise-like pulses, and stable pulsed generation of narrow pulses of 100-200 ps width. We also reveal transitions between different generation states and types of the radiation over pump power and/or phase shifts between coupled cavities. In addition, we determined the optimal parameters of a system of coupled Raman fiber lasers to achieve pulsed lasing depending on the lasing regime with respect to PT symmetry.

Citation Download Citation

Dmitry V. Churkin and Sergey Smirnov "Quasi-CW and pulsed generation in coupled Raman fiber lasers with PT symmetry", Proc. SPIE 12142, Fiber Lasers and Glass Photonics: Materials through Applications III, 121420Q (25 May 2022); https://doi.org/10.1117/12.2621833

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