Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Andreas Vernaleken

Johannes Weitenberg

Peter Russbueldt

Thomas Sartorius

Jan Schulte

Peter RUSSBÜLDT

A method and an arrangement of spectrally broadening laser pulses for non-linear pulse compression is disclosed which is based on the transition from the spectral broadening in a waveguide to the spectral broadening in a suitably shaped lens conductor. The arrangement is non-sensitive with respect to the variations of the pulse power, the position and parameters of the laser beam. The spectrally broadened pulses can be compressed in a satisfactory manner and the quality of the laser beam maintained by dividing the non-linear phase required for spectral broadening into sufficiently smaller steps which can be separated without non-linearity by suitable prorogation. The limitation of the pulse powers to less than the critical power of dielectrics is thus overcome and a pulse energy range for which the spectral broadening in the glass fibers cannot be used, is developed. The arrangement can compress pulses having a large average power.

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Munich, Germany

Andreas Vernaleken