Applied Physics B

, Volume 96, Issue 2, pp 369-377

First online:

Fluorescence reabsorption and its effects on the local effective excitation lifetime

  • M. EichhornAffiliated withFrench–German Research Institute of Saint-Louis (ISL) Email author 

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A spectral theory of fluorescence reabsorption is presented that allows us to describe the effects of radiation trapping, which especially occurs in barrel-polished laser rods, as an effective change of the excitation lifetime. This effect causes a local fluorescence lifetime difference in the laser medium and thus a local change in the quantum efficiency. The theory is compared to experimental results obtained with an Er3+:YAG rod with good agreement.


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