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We demonstrate simultaneous spatial and arbitrary temporal pulse-shaping with a picosecond Yb-doped fiber laser system generating an output power > 10 W. By using a self-developed feed-back control algorithm on a single polarization optical pulse shaper, we obtained arbitrary complex pulse structures in the time domain with high accuracy and at high power level. Meanwhile, the pulse shaping in...
A tandem-pumped Yb-doped fiber with a quantum defect of 2% generates 3% of heat. We believe this is a record-low thermal load and the first calorimetric measurement of the heat from a fiber core.
We show theoretically that a quantum-defect below 1% is possible in tandem-pumped Yb-doped aluminosilicate fibers operating off the gain peak. Experimentally, we reach a quantum defect of 2% and a slope efficiency of 90% or more.
Through nonlinear scattering including stimulated Raman scattering and beam cleanup, a pulsed multimode pump beam is converted into a nearly diffraction-limited supercontinuum extending from 1 to 2 µm in a passive cladding-pumped nonlinear fiber converter.
We report a highly versatile gas phase technique for making ytterbium doped silica fibers. Initial results generated 200W output power with a slope efficiency of 72%.
This tutorial discusses the recent rapid progress of high-power fiber sources, selected state-of-the-art devices in different regimes of operation, the technology, limits to further progress, and possible routes forward.
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