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Novel Tm:(Y,Sc)2O3 Transparent Ceramics for Laser Applications

Thulium doped mixed sesquioxides are well suited for the generation of ultra-short laser pulses in the 2-μm spectral range and for the extension of the laser tuning interval due to formation of solid solutions exhibiting a non-uniform distribution of the crystal field in the dopant occupation sites [1] , [2] . This effect inhomogeneously broadens the absorption and the emission spectra of the lasing ions with respect to the "pure" compositions.