Figure 1: Experimental setup of dual-wavelength Ho-doped fiber laser pumped by a high-power 1150 nm fiber laser.
From: High-power dual-wavelength Ho-doped fiber laser at >2 μm tandem pumped by a 1.15 μm fiber laser
MFA: mode field adapter; HR: high-reflectivity; OC: output-coupler; FBG: fiber Bragg grating; HDF: Ho-doped fiber; HT: high-transmittance.
