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Highly polarized photonic crystal fiber laser

McNeillie, Fiona and Riis, Erling and Broeng, Jes and Folkenberg, Jacob and Petersson, Anders and Simonsen, Harald and Jacobsen, Christian (2004) Highly polarized photonic crystal fiber laser. Optics Express, 12 (17). pp. 3981-3987. ISSN 1094-4087

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Abstract

We report on the design of a polarization maintaining, double-clad, Yb doped photonic crystal fiber and demonstrate its lasing properties. The polarizing properties of the fiber rely on birefringence and differential loss introduced by an anisotropic hole structure. Due to a slight leak from the core to the inner cladding only ~80% of the output light is in the core mode. We have demonstrated 2.9W of output in this mode with a polarization ratio in excess of 200:1.