Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.16: Poster

Mittwoch, 8. März 2017, 17:00–19:00, P OG1

Carrier-envelope phase stability and control of shaped few-cycle laser pulses from a 4f white light shaper — •Daniel Timmer, Stefanie Kerbstadt, Lars Englert, and Matthias Wollenhaupt — Institut für Physik, Carl von Ossietzky Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129 Oldenburg

Few-cycle IR laser pulses are a well-established tool for control of coherent electron dynamics on the sub-fs timescale. For successful realization of such experiments stabilization and control of the carrier envelope phase (CEP) are essential. In order to exploit advanced coherent control strategies, the availability of tailored few-cycle pulses is highly desirable. Here we use a liquid crystal based 4f whitelight shaper to control the CEP of a supercontinuum from a gas-filled hollow-core fiber compressor. Using a home-built f-2f-interferometer capable of single shot measurements we verify both the CEP stability behind the setup and the CEP changes introduced by the shaper. In addition to the control over the temporal shape of the laser electric field, the shaper-based approach provides built-in dispersion management and pulse diagnostics. We present initial results of CEP-stable shaped few-cycle waveforms from our setup.