High efficiency, actively Q-switched Er/Yb fiber laser
2013
Abstract We report the efficient and stable operation at 1549 nm of an actively Q-switched fiber laser based on an Er 3+ /Yb 3+ doped double-clad single mode fiber. It operates with a repetition rate from 45 to 120 kHz and pulse duration from 34 to 80 ns; the output pulse shape and peak pulse intensity are stable over hours of operation. For a repetition rate of 120 kHz and a maximum pump power of 8.1 W we obtained an average output power of 4.0 W with an overall efficiency of 50% and with a minimum pulse duration of 34 ns.
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