Journal
OPTICS LETTERS
Volume 40, Issue 11, Pages 2549-2552Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.40.002549
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Funding
- UK EPSRC [EP/J008052/1]
- EPSRC [EP/L00044X/1, EP/J008052/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L00044X/1, 1105945, EP/J008052/1] Funding Source: researchfish
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A waveguide laser in an ytterbium-doped tantalum pentoxide film is reported. The waveguide is formed of a rib of sputtered tantalum pentoxide on top of oxidized silicon with an over-cladding of silica. Emission at a wavelength of 1025 nm was achieved with an absorbed pump power threshold and slope efficiency of approximate to 29 mW and 27%, respectively, for a cavity formed by a high reflector mirror and an estimated 12% Fresnel reflection from the bare end-face at the output. (C) 2015 Optical Society of America
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