Characterization of ultra-long Raman fibre lasers

S. A. Babin; V. Karalekas; E. V. Podivilov; V. K. Mezentsev; P. Harper; J. D. Ania-Castañón; S. K. Turitsyn

doi:10.1117/12.761626

22 February 2008 Characterization of ultra-long Raman fibre lasers

S. A. Babin, V. Karalekas, E. V. Podivilov, V. K. Mezentsev, P. Harper, J. D. Ania-Castañón, S. K. Turitsyn

Proceedings Volume 6873, Fiber Lasers V: Technology, Systems, and Applications; 68731P (2008) https://doi.org/10.1117/12.761626
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

We present results on characterization of lasers with ultra-long cavity lengths up to 84km, the longest cavity ever reported. We have analyzed the mode structure, shape and width of the generated spectra, intensity fluctuations depending on length and intra-cavity power. The RF spectra exhibit an ultra-dense cavity mode structure (mode spacing is 1.2kHz for 84km), in which the width of the mode beating is proportional to the intra-cavity power while the optical spectra broaden with power according to the square-root law acquiring a specific shape with exponential wings. A model based on wave turbulence formalism has been developed to describe the observed effects.

Citation Download Citation

S. A. Babin, V. Karalekas, E. V. Podivilov, V. K. Mezentsev, P. Harper, J. D. Ania-Castañón, and S. K. Turitsyn "Characterization of ultra-long Raman fibre lasers", Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 68731P (22 February 2008); https://doi.org/10.1117/12.761626

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