Abstract
The TmSrGdGa3O7 crystal was grown by the Czochralski (CZ) method. Continuous-wave, Q-switched, and tunable laser performance are demonstrated based on Tm:SrGdGa3O7 crystal for the first time. The maximum continuous-wave output power was 0.49 W under the absorbed pump power of 8.6 W. Using a commercial WS2 as the saturable absorber, the passively Q-switched laser was successfully achieved. The maximum output power of Q-switched reached up to 0.13 W with the repetition rate of 21.4 kHz and the pulse width of 1.1 μs. A tunable laser was obtained with the whole tuning range of 60.8 nm from 1907.0 to 1967.8 nm.
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