Optical turbulence and spectral condensate in fibre lasers

Author

Turitsyna, Elena G. ; Falkovich, Gregory ; El-Taher, Atalla ; Harper, Paul ; Shu, Xuewen ; Turitsyn, Sergei K.

Author_Institution

Photonics Res. Group, Aston Univ., Birmingham, UK

fYear

2011

fDate

Aug. 28 2011-Sept. 1 2011

Firstpage

1463

Lastpage

1465

Abstract

We study optical wave turbulence in Raman fibre lasers using particular examples of 13 km and 22 km long Fabry-Perot resonators. We demonstrate that the sign of the cavity dispersion has a critical impact on the spectral and temporal properties of generated radiation that are directly relevant to the fibre laser performance. For a normal dispersion, we observe in numerical modelling an intermediate state with an extremely narrow spectrum (condensate), which experiences instability and a sharp transition to a strongly fluctuating regime with a wider spectrum. The experimental results for the generated spectra demonstrate a good match with numerical simulations.

Keywords

Fabry-Perot resonators; Raman lasers; fibre lasers; laser cavity resonators; laser transitions; laser variables measurement; spectral line narrowing; turbulence; Fabry-Perot resonators; Raman fibre lasers; cavity dispersion; distance 22 km; extremely narrow spectrum; intermediate state; optical turbulence; spectral condensate; Fiber lasers; Laser modes; Optical fiber dispersion; Optical fibers; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4577-1939-4

Type

conf

DOI

10.1109/IQEC-CLEO.2011.6193646

Filename

6193646