Internal temperature measurement of an ytterbium doped material under laser operation

Temperature of the pumped volume of an ytterbium doped material has been measured while laser action is taking place. This is achieved by recording green emissions at 530 and 550 nm from Er3+ impurities. These emissions result from energy transfer upconversion processes between Yb3+ and Er3+. Experi...

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Bibliographic Details
Published in:Optics express 2011-01, Vol.19 (2), p.1138-1146
Main Authors: Petit, J, Viana, B, Goldner, Ph
Format: Article
Language:English
Subjects:
Equipment Design
Equipment Failure Analysis
Lasers
Thermography - instrumentation
Thermography - methods
Ytterbium - chemistry
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Summary:Temperature of the pumped volume of an ytterbium doped material has been measured while laser action is taking place. This is achieved by recording green emissions at 530 and 550 nm from Er3+ impurities. These emissions result from energy transfer upconversion processes between Yb3+ and Er3+. Experiments performed on a Yb3+:CaGdAlO4 crystal show the effect of pump power and laser wavelength on the sample internal temperature. Temperature variation along the sample length has also been measured. This method can complement data obtained by thermal cameras which can only access surface temperatures in most laser materials.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.001138