High power, continuous-wave ytterbium-doped fiber laser tunable from 976 to 1120 nm.

We report on a linearly-polarized, continuous-wave Ytterbium-doped fiber laser continuously tunable on the fly over an unprecedented emission bandwidth ranging from 976 nm to 1120 nm and delivering a minimum of 10 W and a maximum of 41 W. Additionally, the bandwidth of the system can be tuned from 100 pm to more than 1 nm at all wavelengths.

Efficient selection of focusing optics in non linear microscopy design through THG analysis.

A theoretical and experimental study of the THG signal from a reference interface in confocal microscope allows precise analysis of beam propagation and optimization of the focusing objectives.