G. Tohmon et al., INCREASED EFFICIENCY AND DECREASED THRESHOLD IN TM-ZBLAN BLUE FIBER LASER CO-PUMPED BY 1.1-MU-M AND 0.68-MU-M LIGHT, IEEE photonics technology letters, 7(7), 1995, pp. 742-744
Lasing characteristics of Tm:ZBLAN blue fiber laser primped with 1.1-m
u m and 0.68-mu m only are reported. Compared to pumping with 1.1-mu m
light only significant increase in the slope efficiency and decrease
in the threshold power were observed In this scheme.