Applying the laser-heated pedestal growth (LHPG) technique to obtain YScO3 crystal fiber have been described in details earlier . Features of the bixbyite-like crystal structure of YScO3 have also been discussed in previous our research . Additionally, the spectroscopic features of Nd 3+ and Tm 3+ dopants in YScO3 crystal fibers have also been extensively investigated and published . This current study aims to specifically focus on the spectral and kinetic properties of Yb 3+ :YScO3 crystal fibers using advanced selective laser spectroscopy methods.