Abstract
In this paper, we present the results obtained with a thulium-doped (Tm-doped) photonic crystal fiber (PCF) amplifier operating in the sub-nanosecond regime with three different sources. In all cases, 40 μJ per pulse could be generated in an all-fiber approach with a good spectral and spatial mode quality. This source is developed for pumping a subsequent optical parameter generators/optical parameter oscillators (OPG/OPA) conversion system based on a gallium arsenide (GaAs) quasi-phase matched crystal.
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