High energy, single-mode, narrow-linewidth fiber laser source using stimulated Brillouin scattering beam cleanup
Abstract
We propose an original nonlinear beam cleaning fiber laser architecture to obtain high energy pulses with a good beam quality and a narrow linewidth. The output beam of a large core Er:Yb co-doped multimode fiber amplifier (M2 ~ 6, 220 μJ) is converted into a near diffraction limited beam (M2 = 1.6) through a stimulated Brillouin scattering injection seeded beam cleanup process. We report in this experiment a multimode to single mode conversion efficiency of 50% while preserving the master oscillator linewidth
Domains
Optics [physics.optics]| Origin | Publisher files allowed on an open archive |
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