Impact of photodarkening on Yb lifetime in Al-silicate fibres and on the rate-equation system

Riccardo Piccoli; Thierry Robin; David Méchin; Stefano Taccheo

doi:10.1117/12.2039007

7 March 2014 Impact of photodarkening on Yb lifetime in Al-silicate fibres and on the rate-equation system

Riccardo Piccoli, Thierry Robin, David Méchin, Stefano Taccheo

Proceedings Volume 8982, Optical Components and Materials XI; 89820T (2014) https://doi.org/10.1117/12.2039007
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

In this paper we report our investigation on the lifetime reduction in ytterbium doped aluminosilicate fibers due to the pump induced photodarkening (PD). We show a linear correlation between equilibrium lifetime reduction and equilibrium losses due to PD and a squared-law dependence between lifetime reduction at equilibrium and dopant concentration (wt%). Finally, we did not observe interplay between PD and quenching effect. The quantitative analysis carried out allows to determine the photodarkening quenching term in the laser rate equations system to properly model laser device.

Citation Download Citation

Riccardo Piccoli, Thierry Robin, David Méchin, and Stefano Taccheo "Impact of photodarkening on Yb lifetime in Al-silicate fibres and on the rate-equation system", Proc. SPIE 8982, Optical Components and Materials XI, 89820T (7 March 2014); https://doi.org/10.1117/12.2039007

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