1.9 µm waveguide laser fabricated by ultrafast laser inscription in Tm:Lu 2 O 3 ceramic

1.9 µm waveguide laser fabricated by ultrafast laser inscription in Tm:Lu 2 O 3 ceramic

The ultrafast laser inscription technique has been used to fabricate channel waveguides in Tm -doped Lu O ceramic gain medium for the first time to our knowledge. Laser operation has been demonstrated using a monolithic microchip cavity with a continuous-wave Ti:sapphire pump source at 796 nm. The m...

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Bibliographic Details
Published in:Optics express Vol. 25; no. 13; p. 14910
Main Authors: Morris, J, Stevenson, N K, Bookey, H T, Kar, A K, Brown, C T A, Hopkins, J-M, Dawson, M D, Lagatsky, A A
Format: Journal Article
Language:English
Published: United States 26-06-2017
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Summary:The ultrafast laser inscription technique has been used to fabricate channel waveguides in Tm -doped Lu O ceramic gain medium for the first time to our knowledge. Laser operation has been demonstrated using a monolithic microchip cavity with a continuous-wave Ti:sapphire pump source at 796 nm. The maximum output power achieved from the Tm:Lu O waveguide laser was 81 mW at 1942 nm. A maximum slope efficiency of 9.5% was measured with the laser thresholds observed to be in the range of 50-200 mW of absorbed pump power. Propagation losses for this waveguide structure are calculated to be 0.7 dB⋅cm ± 0.3 dB⋅cm at the lasing wavelength.
ISSN:1094-4087