This work presents a review on the effect of transverse mode instability in high-power fiber
laser systems and the corresponding investigations led worldwide over the past decade …

The threshold-like onset of mode instabilities is currently the main limitation for the scaling of
the average output power of fiber laser systems with diffraction limited beam quality. In this …

We report on two types of modal instabilities observed in high power Yb amplifiers based on
Large Mode Area Fibers. The first is observed to occur at a Threshold Power, which we refer …

We use a detailed numerical model of stimulated thermal Rayleigh scattering to compute
mode instability thresholds in Tm^ 3+-doped fiber amplifiers. The fiber amplifies 2040 nm …

The average output power of Yb-doped fiber amplifier systems is currently limited by the
onset of transverse mode instabilities. Besides, it has been recently shown that the …

It has been recently shown that photodarkening can significantly reduce the mode instability
threshold in high power Yb-doped fiber amplifiers, thus resulting in an even more severe …

摘要模式不稳定指高功率光纤激光随着输出功率提升发生的由稳态基模输出突然变为非稳态高
阶模式输出的模式突变, 会导致光束质量下降, 限制着衍射极限光束质量光纤激光输出功率的 …

We experimentally studied the influence of different operation wavelengths on the heat-load
in a fiber-laser. Photodarkening and quantum-defect heating results in an unexpected …

The dependence of mode instabilities (MIs) on ytterbium dopant concentrations in high-
power fiber amplifiers has been investigated. It is theoretically shown that, by only varying …

Propagation properties of high-power fiber laser with high-order-mode (HOM) content are
studied numerically for the first time to the best of our knowledge. The effect of HOM on the …