Linearly polarized ytterbium-doped fiber laser in a pedestal design with aluminosilicate inner cladding

Abstract

Ytterbium-doped polarization-maintaining fiber in a pedestal geometry is demonstrated using MCVD and a novel in-situ doping technique. The aluminosilicate pedestal layers minimize the thermal expansion mismatch against the silica outer cladding and permits complete freedom of location for the stress-applying parts in the fiber. A birefringence of 2.4×10^-4 is experimentally determined. The fiber delivers linearly polarized laser exhibiting 79% slope efficiency with a polarization extinction ratio of 12 dB.

Laser Physics Letters (2011) Vol.8(6) pp.453-457

doi: 10.1002/lapl.201110018

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