1.9 µm waveguide laser fabricated by ultrafast laser inscription in Tm: Lu2O3 ceramic

J. Morris, N. K. Stevenson, H. T. Bookey, A. K. Kar, C. T.A. Brown, J. M. Hopkins, M. D. Dawson, A.A. Lagatsky

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Abstract

The ultrafast laser inscription technique has been used to fabricate channel waveguides in Tm3+-doped Lu2O3 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: Lu2O3 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 dBcm-1 ± 0.3 dBcm-1 at the lasing wavelength.

Original languageEnglish
Pages (from-to)14910-14917
Number of pages8
JournalOptics Express
Volume25
Issue number13
DOIs
Publication statusPublished - 20 Jun 2017

Keywords

  • solid state lasers
  • ultrafast lasers
  • waveguides
  • integrated optics devices

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