Mode locking and chaos in Brillouin fibre lasers

Raman Kashyap; Amirhossein Tehranchi

doi:10.1117/12.3011147

13 March 2024 Mode locking and chaos in Brillouin fibre lasers

Proceedings Volume PC12902, Photonic Heat Engines: Science and Applications VI; PC1290204 (2024) https://doi.org/10.1117/12.3011147
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Higher order Stokes waves are easily generated in optical fibres through nonlinear stimulated Brillouin scattering. Since the Stokes waves have a linewidth limited by the narrow bandwidth of the Brillouin gain of ~20MHz, higher order Stokes waves are near multiples of the first Stokes shift of ~10GHz, generating a comb of frequencies. When Fourier transformed this comb can potentially lead to ultrashort pulse generation. Our investigations showed that short pulses of order 10ps can indeed be generated with a few Stokes waves, starting with a single CW pump. However, in longer cavities, these Stokes orders de-phase and lead to chaotic behaviour. Taming this source could lead to complex instruments being replaced by a simple optical fibre cavity.

Conference Presentation

Citation Download Citation

Raman Kashyap and Amirhossein Tehranchi "Mode locking and chaos in Brillouin fibre lasers", Proc. SPIE PC12902, Photonic Heat Engines: Science and Applications VI, PC1290204 (13 March 2024); https://doi.org/10.1117/12.3011147

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