Figure 1
From: 400 mW narrow-linewidth Tm-doped silica fiber laser output near 1750nm with volume Bragg grating

Evolution of output power at 1750 nm laser as linear function of absorbed (top scale) and incident (bottom scale) pump powers at 1550 nm.
From: 400 mW narrow-linewidth Tm-doped silica fiber laser output near 1750nm with volume Bragg grating

Evolution of output power at 1750 nm laser as linear function of absorbed (top scale) and incident (bottom scale) pump powers at 1550 nm.