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DPG

München 2004 – wissenschaftliches Programm

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A: Atomphysik

A 18: Multiphotonionisation II

A 18.6: Vortrag

Donnerstag, 25. März 2004, 17:45–18:00, HS 133

Carrier-Envelope Phase Measurement using a Non Phase Stable Laser — •Matthias Lezius1,2, Kevin O’Keeffe1, Peter Jöchl1, Herwig Drexel2, Verena Grill2, and Ferenc Krausz11Institut für Photonik, Technische Universität Wien, Gusshausstr. 27/387, A-1040 Wien — 2Institut für Ionenphysik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck

We demonstrate that the phase between the carrier and the pulse envelope of a few-cycle laser pulse can be retrieved from non phase stable laser systems, provided that such laser pulses are about 5 fs long and the repetition rate is in the order of 1kHz. Our approach is based on online determination of the phase using f−2f interferometry. By a comparison of the self referencing interferometric signal with the photoelectron current emitted into a 7 degree solid angle parallel to the laser polarization we obtain the absolute value of the carrier envelope phase provided that Coulomb correction for electron energies below 10eV can be taken correctly into account.

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