CrO 4 3 − and MnO 4 2 −: Broadband Emitters in the NIR and Potential Laser Systems

CrO 4 3 − and MnO 4 2 − doped crystals exhibit broadband emission between 11000 and 7000 cm−1 upon VIS/NIR excitation. Thermal quenching is within acceptable limits: The Li3PO4: Cr5+ and BaSO4:Mn6+ emission persists up to room temperature with estimated quantum efficiencies of more than 20%.