Midinfrared (MIR) Supercontinuum (SC) laser has a wide range of applications in environmental monitoring, medical imaging and other fields. In-amplifier MIR SC generation benefits from compact configuration and high conversion efficiency. In this paper, high-power supercontinuum generation based on thulium-doped ZBLAN fiber was achieved, with a spectral range covering 2~3.72 μm and an output power up to 9.04 W.
We have demonstrated a 26.6 μJ microsecond GHz tunable burst-mode pulsed laser. The burst-mode laser has a pulse duration of 5.5 μs, and the repetition rate of the intra-burst can be adjusted from 1 to 2 GHz. To mitigate amplified spontaneous emission and non-linear effects, we have implemented a synchronous pumping scheme in the secondary pre-amplifier, and achieved a maximum energy output of 26.6 µJ. Furthermore, the envelope of the burst-mode pulsed laser is maintained with uniformity through a pre-compensation acoustic-optical modulator.
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