Resumen: Using a previously validated characterization method based on the careful measurement of the characteristic parameters and fluorescence emission spectra of a highly Yb-doped double-clad fibre, we evaluate the contribution of ion pair induced processes to the output power of a double-clad Yb-doped fibre ring laser. This contribution is proved to be insignificant, contrary to analysis by other authors, who overestimate the role of ion pairs. Idioma: Inglés DOI: 10.1088/1555-6611/aa9ebc Año: 2018 Publicado en: LASER PHYSICS 28, 3 (2018), 035003 [5 pp] ISSN: 1054-660X Factor impacto JCR: 1.231 (2018) Categ. JCR: OPTICS rank: 70 / 95 = 0.737 (2018) - Q3 - T3 Categ. JCR: PHYSICS, APPLIED rank: 112 / 148 = 0.757 (2018) - Q4 - T3 Factor impacto SCIMAGO: 0.376 - Atomic and Molecular Physics, and Optics (Q2) - Instrumentation (Q2) - Industrial and Manufacturing Engineering (Q2) - Condensed Matter Physics (Q2)