Experimental and theoretical study of longitudinal power distribution in fiber lasers with random distributed feedback

We have measured the longitudinal power distribution inside a random distributed feedback Raman fiber laser. The observed distribution has a sharp maximum whose position depends on pump power. The spatial distribution profiles are different for the first and the second Stokes waves. Both analytic solution and results of direct numerical modeling are in excellent agreement with experimental observations. ©2012 Optical Society of America OCIS codes: (140.3510) Lasers, fiber; (140.3490) Lasers, distributed-feedback; (290.5910) Scattering, stimulated Raman; (290.5870) Scattering, Rayleigh. References and links 1. S. K. Turitsyn, S. A. Babin, A. E. El-Taher, P. Harper, D. V. Churkin, S. I. Kablukov, J. D. Ania-Castañón, V. Karalekas, and E. V. Podivilov, “Random distributed feedback fibre laser,” Nat. Photonics 4(4), 231–235 (2010). 2. H. Cao, “Review on latest developments in random lasers with coherent feedback,” J. Phys. A 38(49), 10497– 10535 (2005). 3. D. S. 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