Intense 1.0um emission of Ho3+ has been achieved through Yb3+ sensitization in fluorogermanate glass-ceramic containing LaF3 pumped with 980 um laser diode (LD).e observation of concurrent emissions at 538, 650 and 1192nm points to the additional deexcitation routes based on infrared-to-visible upconversation processes and Ho3+:5I6 > 5I8 radiative transmission. Comparative investigations of photoluminescent spectra and decay curves have indicated the effective role of C33+ ions in enhancing the 2.0um fluorescence along with suppressing the occurrence of these concurrent emissions. This would offer a promising approach to develop compact and efficient 2.0-um laser systems.
Origin
S China University Technology
Journal Title
Jacs 96 12 2013 3836-3841
Sector
Glass Ceramics
Class
GC 842