AI Article Synopsis
- The study discusses how pump-induced photodarkening (PD) reduces the lifetime of ytterbium-doped aluminosilicate fibers over time.
- It establishes a linear relationship between lifetime reduction at an equilibrium state and the losses caused by PD, indicating that higher losses correlate with shorter lifetimes.
- The research also notes a squared-law relationship between lifetime reduction and dopant concentration, suggesting that adjusting the rate equations can enhance their accuracy, and it examines how different pump power levels affect the fluorescence lifetime based on different levels of inversion.
Article Abstract
In this Letter, the lifetime temporal reduction in ytterbium-doped aluminosilicate fibers due to pump-induced photodarkening (PD) has been reported. A linear correlation between lifetime reduction at equilibrium state and equilibrium losses due to the PD phenomenon was demonstrated. A squared-law dependence between lifetime reduction and dopant concentration (percent by weight) suggests a possible correction term for the rate equations system which allows improving its accuracy. Finally, a quenching effect was also observed for different pump power levels in order to find the corresponding lifetime value for different inversion levels. The quantitative analysis allows determination of the PD quenching term in the laser rate equations system to properly model a laser device that may be affected by this process.
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| http://dx.doi.org/10.1364/OL.38.004370 | DOI Listing |
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