Verfahren zur Kompensation der Dispersion von Faserlasern aus Fluoridbasis im zweiten optischen Fenster

摘要

The invention concerns a method of manipulating a compensation fibre such that it can compensate the high negative dispersion of a fibre laser in the second optical window. According to the invention, the active fibre of the fibre laser is linked to a compensation fibre which consists of a step-index quartz glass core with a sheathing. By doping the compensation fibre sheathing with fluorine in a targeted manner, a positive value is set for the dispersion of the compensation fibre. Subsequent dimensioning of the length of the compensation fibre increases the set dispersion value to the positive dispersion value necessary for complete compensation of the dispersion of the fibre laser.