Dresden 2011 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster III

A 26.32: Poster

Donnerstag, 17. März 2011, 16:00–18:30, P2

Characterization of the Carrier Envelope Phase (CEP) of a laser pulse by a non dispersive method — •Nicolas Camus, Manuel Kremer, Christian Hofrichter, Bettina Fischer, Vandana Sharma, Robert Moshammer, and Joachim Ullrich — Max Planck Institut for Nuclear Physics, 69117 Heidelberg, Germany

In few-cycle laser science, the CEP of the pulse (offset between the maximum of the electric field and the maximum of the envelope of the pulse) gives direct information on the shape of the electric field and consequently on the possible light-matter interactions induced by it. To measure it, interferometric techniques, such as the f-to-2f technique, are commonly used and provide stabilization of this phase. We report on a more recent technique based on Above Threshold Ionization (ATI) of rare gas atoms by linearly polarized laser pulses. The analysis of the left-right asymmetry of the escaping electrons allows a direct measurement of this phase. We present single-shot measurements done with a stereo-ATI device and compare them to phase stabilization with a dispersive method.