Figure 8
The NIR PL spectrum from the 4.1 μm resonantly pumped Pr3+-doped chalcogenide fibre amplifier when the ~5.5 μm signal power was at 0, and 20 mW, respectively. The 4.1 μm pump power was maintained at 120 mW.
Figure 8 | Scientific Reports
The NIR PL spectrum from the 4.1 μm resonantly pumped Pr3+-doped chalcogenide fibre amplifier when the ~5.5 μm signal power was at 0, and 20 mW, respectively. The 4.1 μm pump power was maintained at 120 mW.
