Efficient high-power continuous wave Er:Lu2O3laser at 2.85 μm.
Summary of "Efficient high-power continuous wave Er:Lu2O3laser at 2.85 μm."
We report on crystal growth, spectroscopy, thermal conductivity and I11/24→I13/24-laser performance of Er:Lu2O3. Pumping with an optically pumped semiconductor laser at 971 nm, 1.4 W of cw output power with a slope efficiency of ∼36% at 2.85 µm was obtained at room temperature. This exceeds the Stokes efficiency due to an upconversion process recycling population of the lower laser level back into the upper laser level, yielding the highest efficiency of any Er-sesquioxide laser around 3 µm. Under diode pumping, 5.9 W of output power with 27% of slope efficiency was achieved with an M2 of 1.2 to 1.4.
Affiliation
Journal Details
This article was published in the following journal.
Name: Optics letters
ISSN: 1539-4794
Pages: 2568-70
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22743457
- DOI: http://dx.doi.org/
Medical and Biotech [MESH] Definitions
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Laser Therapy, Low-level
Treatment using irradiation with LASER light of low power intensity so that the effects are not due to heat, as in LASER THERAPY. These non-thermal effects are thought to be mediated by a photochemical reaction that alters CELL MEMBRANE PERMEABILITY, leading to increased mRNA synthesis and CELL PROLIFERATION. Low-level laser therapy has been used for a wide variety of conditions, but most frequently for wound healing and pain control.
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