Abstract
The main factor limiting the output power of fiber lasers is the influence of nonlinear effects: stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS), etc. To obtain high power densities, it is proposed to sum coherently radiations from several sources [1]. To this end, it is necessary to develop and implement a high-power single-frequency master oscillator, providing a sufficient coherence length. A generally accepted approach is to use a narrow-band master oscillator and several cascades of fiber amplifiers [2].
© 2013 IEEE
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