Najafi, HosseinHosseinNajafiPilz, SönkeSönkePilzEl Sayed, A.A.El SayedBoas, JolienJolienBoasKummer, DieterDieterKummerRomano, ValerioValerioRomano2024-11-192024-11-1920160277-786X10.24451/arbor.7522https://doi.org/10.24451/arbor.752210.1117/12.2230566https://arbor.bfh.ch/handle/arbor/38022enAtomic-scale imaging of dopant atoms and clusters in Yb-doped optical fibers-conference_item