Diffraction-limited polarized emission from a multimode ytterbium fiber amplifier after a nonlinear beam converter |
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| Authors: | Lombard L Brignon A Huignard J P Lallier E Lucas-Leclin G Georges P Pauliat G Roosen G |
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| Affiliation: | Thales Research and Technology-France, Domaine de Corbeville, 91404 Orsay, France. laurent.lombard@thalesgroup.com |
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| Abstract: | The multimode and depolarized output beam of a highly multimode diode-pumped Yb-doped fiber amplifier is converted to a diffraction-limited, linearly polarized beam by a self-referencing two-wave-mixing process in an infrared-sensitive photorefractive crystal (Rh:BaTiO3). As much as 11.6 W of single-mode output is achieved with a 78% multimode-to-single-mode photorefractive conversion efficiency. |
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