Abstract
We describe lasing of a thulium-doped polarizing photonic crystal fiber. A long fiber with diameter core, diameter cladding, and ratio of 0.18 was pumped with a diode and produced a polarized output with a polarization extinction ratio (PER) of and an of . An intracavity polarizer and half-wave plate minimally increased the PER to . The output power had 35% slope efficiency relative to the absorbed pump power. The maximum cw output power was limited to due to the quantum defect heating of the fiber.
© 2011 Optical Society of America
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