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Proceedings Paper

Characterization of ultra-long Raman fibre lasers
Author(s): S. A. Babin; V. Karalekas; E. V. Podivilov; V. K. Mezentsev; P. Harper; J. D. Ania-Castañón; S. K. Turitsyn
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Paper 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.

Paper Details

Date Published: 22 February 2008
PDF: 9 pages
Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 68731P (22 February 2008); doi: 10.1117/12.761626
Show Author Affiliations
S. A. Babin, Institute of Automation and Electrometry (Russia)
V. Karalekas, Aston Univ. (United Kingdom)
E. V. Podivilov, Institute of Automation and Electrometry (Russia)
V. K. Mezentsev, Aston Univ. (United Kingdom)
P. Harper, Aston Univ. (United Kingdom)
J. D. Ania-Castañón, Aston Univ. (United Kingdom)
Instituto de Óptica (Spain)
S. K. Turitsyn, Aston Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 6873:
Fiber Lasers V: Technology, Systems, and Applications
Jes Broeng; Clifford Headley, Editor(s)

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