Time-resolved kinetics of pair-induced quenching in holmium-doped optical fibers

André W. Edvardsen; Lars G. Holmen

doi:10.1117/12.2670191

30 May 2023 Time-resolved kinetics of pair-induced quenching in holmium-doped optical fibers

André W. Edvardsen, Lars G. Holmen

Proceedings Volume 12573, Specialty Optical Fibres; 1257313 (2023) https://doi.org/10.1117/12.2670191
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Conference Poster

Abstract

We present results from studying dynamic aspects of the pair-induced quenching (PIQ) process in holmium-doped optical fibers. The PIQ process is detrimental for the efficiency of Ho-doped fiber lasers operating in the eye-safe 2.1 μm wavelength regime, and has been suggested to be the dominating cause of efficiency degradation in such lasers. Time-resolved fluorescence experiments were used to determine the rate of the PIQ-related upconversion process occurring within pairs of Ho-ions, i.e. the lifetime of doubly-excited Ho-pairs. Measurements were performed on twelve different Ho-doped fibers varying by an order of magnitude in Ho-doping concentration. The lifetime of doubly-excited Ho-pairs was measured to be 460 ns on average, varying only slightly for the different fibers.

Citation Download Citation

André W. Edvardsen and Lars G. Holmen "Time-resolved kinetics of pair-induced quenching in holmium-doped optical fibers", Proc. SPIE 12573, Specialty Optical Fibres, 1257313 (30 May 2023); https://doi.org/10.1117/12.2670191

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