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Fiber Lasers & AmplifiersThorlabs' fiber lasers are suitable for a range of applications in the infrared region. Choose from fiber lasers with thulium-doped fiber (1800 - 2400 nm), ytterbium-doped fiber (1025 - 1075 nm), erbium-doped fiber (1530 - 1535 nm), or erbium-doped zirconium fluoride (ZrF4) fiber (2.7 μm). Thorlabs also manufactures a MIR supercontiuum fiber laser for 1.3 - 4.5 μm and a femtosecond fiber laser with emission at 2 μm. In addition to Thorlabs-manufactured options, our strategic partner, Menlo Systems, offers an extensive line of femtosecond fiber lasers.