Erlangen 2018 – wissenschaftliches Programm
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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 3: Laser Systems and Applications
K 3.7: Vortrag
Dienstag, 6. März 2018, 15:45–16:00, MB HS
Optimized pulse characterization from UV to IR by two-dimensional spectral shearing interferometry (2DSI) — •Fabian Scheiba1,2, Giulio Maria Rossi1,2, Roland E. Mainz1,2, Yudong Yang1,2, Shih-Hsuan Chia1,2, Oliver D. Mücke1,2, Giovanni Cirmi1,2, and Franz X. Kärtner1,2 — 1Center for Free-Electron Laser Science, Notkestrasse 85, 22607 Hamburg, Germany — 2Physics Department and The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
To manipulate electron dynamics in their inherent time scale, ultrashort laser sources delivering pulse durations below one optical cycle are under development. Pulse characterization methods have to keep pace with the ultrabroad bandwidth of sub-cycle pulses. We present our simplified and compact version of 2DSI, capable of characterizing a variety of broadband light sources. The ancillary pulses can be derived from the pump laser allowing to measure even low energy pulses quickly. Moreover the possibility to up- or downconvert the fundamental spectrum permits to measure in the visible range a large variety of sources spanning from IR to UV. The two-dimensional data trace allows for direct graphical evaluation of group delay and pulse stability. This gives the opportunity to monitor the spectral phase in realtime for >1 kHz rep.-rate systems. 2DSI measurements of a two-color driven hollow core fibre, an OPA synthesizer and an octave-spanning Ti:sapphire oscillator, demonstrate the capability to characterize ultra-broadband pulses with energies from few nJs to mJs level.