Random distributed feedback fibre laser

Sergei K. Turitsyn, Sergei A. Babin, Atalla El-Taher, Paul Harper, Dmitriy V. Churkin, Sergey I. Kablukov, Juan D. Ania-Castañón, Vassilis Karalekas, Evgenii V. Podivilov

Research output: Contribution to journalArticlepeer-review


The concept of random lasers making use of multiple scattering in amplifying disordered media to generate coherent light has attracted a great deal of attention in recent years. Here, we demonstrate a fibre laser with a mirrorless open cavity that operates via Rayleigh scattering, amplified through the Raman effect. The fibre waveguide geometry provides transverse confinement and effectively one-dimensional random distributed feedback, leading to the generation of a stationary near-Gaussian beam with a narrow spectrum, and with efficiency and performance comparable to regular lasers. Rayleigh scattering due to inhomogeneities within the glass structure of the fibre is extremely weak, making the operation and properties of the proposed random distributed feedback lasers profoundly different from those of both traditional random lasers and conventional fibre lasers.
Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalNature Photonics
Issue number7 February 2010
Publication statusPublished - 7 Feb 2010


  • photonics
  • fibre laser
  • Rayleigh scattering
  • Raman effect


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