Numerical modelling of ultra-narrow generation in a Raman fiber laser with random distributed feedback

Oleg A. Gorbunov; Ilya D. Vatnik; Sergey V. Smirnov; Alena Y. Kolesnikova; Dmitry V. Churkin

doi:10.1117/12.2687562

26 November 2023 Numerical modelling of ultra-narrow generation in a Raman fiber laser with random distributed feedback

Oleg A. Gorbunov, Ilya D. Vatnik, Sergey V. Smirnov, Alena Y. Kolesnikova, Dmitry V. Churkin

Proceedings Volume 12775, Quantum and Nonlinear Optics X; 127751I (2023) https://doi.org/10.1117/12.2687562
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

In present paper we employ numerical simulation, based on solution of system of coupled nonlinear Schrödinger equations, for demonstration of the possibility of ultra-narrow spectral generation in a Raman fiber laser with randomly distributed feedback. Line spectrum formation is caused by weak optical feedback due to Rayleigh backscattering if its impact overweighs the effects of nonlinear interactions. This can be observed either near the generation threshold, where generation power is low, or well above the threshold in case of artificially lowered nonlinear coefficient. Our simulation agrees well with previous experimental observations of ultra-narrow spectral modes in random fiber laser.

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Oleg A. Gorbunov, Ilya D. Vatnik, Sergey V. Smirnov, Alena Y. Kolesnikova, and Dmitry V. Churkin "Numerical modelling of ultra-narrow generation in a Raman fiber laser with random distributed feedback", Proc. SPIE 12775, Quantum and Nonlinear Optics X, 127751I (26 November 2023); https://doi.org/10.1117/12.2687562

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