The optical properties of rare-earth (RE) activated materials have been extensively investigated for their potential as solid-state laser gain media. More recently, mid-IR gain and lasing from RE3+ (Tb3+, Pr3+, Ce3+) doped low-phonon selenide-based chalcogenide glasses have sparked further development of this class of materials which have shown lifetimes on the order of millisecond for mid-IR transitions. In this work, mid-IR (3 - 5 micron) spectroscopic study was performed on the Ho3+ doped low-phonon sulfide and selenide-based chalcogenides glasses as well as indium fluoride glasses, which were prepared by melt quenching technique.
|