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Q: Fachverband Quantenoptik und Photonik

Q 40: Ultrashort laser pulses I

Q 40.2: Vortrag

Donnerstag, 20. März 2014, 10:45–11:00, DO26 207

Spectral broadening of multi-mJ pulses in hollow fibers — •Tamas Nagy — Institut für Quantenoptik, Leibniz Universität Hannover — Laser-Laboratorium Göttingen e.V.

Thank to the fast development of laser technology contemporary fs-amplifier systems can deliver few 10 fs long pulses up to 20 mJ energies at kHz repetition rates. However, numerous applications require few-cycle pulses whose spectral widths are well beyond the gain bandwidths of available laser amplifier materials. In order to solve this problem several methods were developed which can increase the bandwidth. The most successful technique uses self-phase modulation in noble gases filled into hollow fibers. It is working excellent for up to mJ pulse energies but the energy upscaling proved to be surprisingly hard. In this contribution we will overview the key problems, possible solutions and exciting new results achieved in spectral broadening of high-energy pulses.