The Dynamics of Multi-Peak Pulsed Generation in a Q-Switched Thulium-Doped Fiber Laser

PHOTONICS(2022)

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Abstract
We demonstrate a detailed theoretical and experimental study of a thulium-doped fiber laser being Q-switched by means of an acousto-optic modulator. The processes leading to the generation of discontinuous multi-peak pulses with an energy of up to 5 mu J and a nanosecond structure are described. The dynamics of the multi-peak structure's evolution is demonstrated and a method of switching to a single-pulse mode is proposed.
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Key words
thulium, fiber laser, Q-switching, multi-peak pulsed generation
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