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Multi-watt laser operation and laser parameters of Ho-doped LuO at 2.12μm

Optical Materials Express, ISSN: 2159-3930, Vol: 1, Issue: 8, Page: 1447-1456
2011
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Metrics Details

  • Citations
    53
    • Citation Indexes
      53
  • Captures
    10

Article Description

We present spectroscopic investigations and the first laser operation of Ho:Lu2O3. Laser operation was obtained with two different setups at room temperature: In a 1.9 μm diode pumped setup a maximum output power of 15Wwas achieved. With a Tm-fiber laser pumped setup the maximum output power was 5.2W and the slope efficiency was 54% with respect to the absorbed pump power. Absorption measurements revealed absorption cross sections of up to 11.7·10 cm at 1928 nm. In the 2.1 μm range a maximum emission cross section of 4.5 10 cm at 2124 nm was determined, which remains the highest gain peak even for high inversions. The fluorescence lifetime of the I-manifold was found to be 10 ms. © 2011 Optical Society of America.

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