The fiber lasers commercialized by IDIL Fibres Optiques are built around the design of a DFB (Distributed Feed Back) laser. They use an Erbium or Ytterbium doped fiber on which a FBG (Fiber Bragg Grating) is written. By construction, this laser is naturally single-frequency. Such type of laser is then also tunable, via thermal control over several nm without any mode hopping. It is pumped, thanks a multiplexer, by a laser diode operating @ 980 nm.

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