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Micro-fluorescence lifetime and spectral imaging of ytterbium doped laser materials

 
: Schreiber, T.; Kuhn, S.; Feldkamp, G.; Schwuchow, A.; Schuster, K.; Hein, S.; Eberhardt, R.; Tünnermann, A.

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Fulltext ()

Optics Express 26 (2018), No.25, pp.32417-32432
ISSN: 1094-4087
English
Journal Article, Electronic Publication
Fraunhofer IOF ()

Abstract
We present the application of a confocal fluorescence microscope to the analysis of Yb-doped solid-state laser materials, with examples of Yb-doped crystals, photonic crystal fibers and fiber preforms made with different manufacturing processes. Beside the fluorescence lifetime image itself, a microscopic spectral fluorescence emission analysis is presented and spatially resolved emission cross sections are obtained. Doping concentration and its distributions and other laser optical parameters are measured, which help to analyze manufacturing steps. Further properties like photodarkening and saturation are addressed.

: http://publica.fraunhofer.de/documents/N-581845.html