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Title: Theory of a random fiber laser

We develop the theory explaining the role of nonlinearity in generation of radiation in a fiber laser that is pumped by external light. The pumping energy is converted into the generating signal due to the Raman scattering supplying an effective gain for the signal. The signal is generated with frequencies near the one corresponding to the maximum value of the gain. Generation conditions and spectral properties of the generated signal are examined. We focus mainly on the case of a random laser where reflection of the signal occurs on impurities of the fiber. From the theoretical standpoint, kinetics of a wave system close to an integrable one are investigated. We demonstrate that in this case, the perturbation expansion in the kinetic equation has to use the closeness to the integrable case.
Authors:
;  [1] ;  [2] ;  [1]
  1. Russian Academy of Sciences, Landau Institute for Theoretical Physics (Russian Federation)
  2. Siberian Branch of Russian Academy of Sciences, Institute of Automation and Electrometry (Russian Federation)
Publication Date:
OSTI Identifier:
22472471
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 119; Journal Issue: 6; Other Information: Copyright (c) 2014 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; GAIN; INTEGRAL CALCULUS; KINETIC EQUATIONS; LASER RADIATION; NONLINEAR PROBLEMS; OPTICAL FIBERS; OPTICAL PUMPING; PERTURBATION THEORY; RAMAN EFFECT; RANDOMNESS; REFLECTION; SOLID STATE LASERS; VISIBLE RADIATION