Efficient cryo-cooled 2.7-μm Er3+:Y2O3 ceramic laser with direct diode pumping of the upper laser level

Reported here is the first cryogenically‐cooled performance of Er3+‐doped Y2O3 laser based on 4I11/2 → 4I13/2 transitions. Laser material was diode‐pumped directly into an upper laser manifold 4I11/2 in order to minimize quantum defect of this Mid‐IR laser. CW output power of over 1.6 W at ∼2.7 μm w...

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Bibliographic Details
Published in:Laser physics letters 2010-08, Vol.7 (8), p.569-572
Main Authors: Sanamyan, T., Simmons, J., Dubinskii, M.
Format: Article
Language:English
Subjects:
Diode-pumped lasers
Er-doped crystal
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Laser materials
Lasers
low phonon laser host
multiphonon nonradiative decay
Optical materials
Optics
Physics
sesquioxide laser ceramic
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Summary:Reported here is the first cryogenically‐cooled performance of Er3+‐doped Y2O3 laser based on 4I11/2 → 4I13/2 transitions. Laser material was diode‐pumped directly into an upper laser manifold 4I11/2 in order to minimize quantum defect of this Mid‐IR laser. CW output power of over 1.6 W at ∼2.7 μm was achieved with the 27.5% slope efficiency, which is approaching the quantum defect‐limited efficiency value despite the marginal optical quality of the available laser sample. (© 2010 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)
ISSN:1612-2011
1612-202X
DOI:10.1002/lapl.201010031