Goniometrical measurements of fluorescence quantum efficiency

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Fluorescent brightening agents are widely used in various industries to enhance the appearance of materials. In order to describe the colour of a fluorescent surface, accurate measurements of fluorescence emission are needed. In this work, measurements of goniometrically resolved bispectral luminescent radiance factors are presented with improved uncertainties. In addition, a method for goniometrically determining the spectral quantum efficiencies of the fluorescent process is presented and validated. The advantage of goniometric measurements is that they avoid the need to assume a specific angular emission profile of the fluorescent sample.

Original languageEnglish
Article number025204
JournalMeasurement Science and Technology
Issue number2
Publication statusPublished - 6 Jan 2016
MoE publication typeA1 Journal article-refereed


  • bispectral luminescent radiance factor
  • fluorescence
  • goniometrical
  • quantum efficiency
  • quantum yield
  • uncertainty


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