Supercontinuum-laser diffuse reflectance spectroscopy in conjunction with an extended Kubelka-Munk model-a methodology for determination of temperature-dependent quantum efficiency in highly scattering and fluorescent media

Temperature-dependent diffuse reflectance measurements on Cr-doped -alumina monoliths have been performed using supercontinuum-laser illumination and -laser heating. These measurements have been interpreted using an extended Kubelka-Munk (K-M) model describing diffuse-light propagation in highly sca...

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Bibliographic Details
Published in:Applied optics (2004) 2019-04, Vol.58 (10), p.2438
Main Authors: Brupbacher, Michael C, Zhang, Dajie, Buchta, William M, Airola, Marc B, Brown, David M, Thomas, Michael E, Spicer, James B
Format: Article
Language:English
Subjects:
Aluminum oxide
Diffuse reflectance spectroscopy
Fluorescence
Laser beam heating
Lasers
Light
Nickel
Qualitative analysis
Quantum efficiency
Scattering
Spectrum analysis
Temperature dependence
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Summary:Temperature-dependent diffuse reflectance measurements on Cr-doped -alumina monoliths have been performed using supercontinuum-laser illumination and -laser heating. These measurements have been interpreted using an extended Kubelka-Munk (K-M) model describing diffuse-light propagation in highly scattering and fluorescent media to assess the temperature dependence of fluorescence quantum efficiency. Analysis of experimental results has provided a qualitative understanding of the temperature-dependent conditions for model applicability and also suggests methods for using supercontinuum-laser diffuse reflectance spectroscopy for detection of unknown fluorescent dopants.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.58.002438