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Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 22: Ultrakurze Laserpulse: Anwendungen 1

Q 22.3: Talk

Tuesday, March 15, 2011, 11:00–11:15, SCH A01

Zeptosecond precision pulse shaping — •Jens Köhler, Matthias Wollenhaupt, Tim Bayer, Cristian Sarpe, and Thomas Baumert — Universität Kassel, Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), Heinrich-Plett-Str. 40, D-34132 Kassel, Germany

We investigate the temporal precision in the generation of an ultrashort laser pulse pair. To this end, we combine a femtosecond polarization pulse shaper [1] with a polarizer and employ two linear spectral phase masks to mimic an ultrastable common-path interferometer. In an all-optical experiment we study the interference signal resulting from two temporally delayed pulses. Our results demonstrate a 2σ-precision of 300 zs = 300 × 10−21 s in pulse-to-pulse delay. This corresponds to a variation of the optical path length in conventional delay stage based interferometers of 0.45 Å. In addition, we apply these precisely generated pulse pairs and furthermore pulse sequences generated by sinusoidal spectral phase modulation to strong-field quantum control. In a coherent electronic excitation experiment we show ultrafast switching of photoelectron spectra via Photon-Locking by temporal phase discontinuities [2,3] on the few attosecond timescale.
[1] M. Wollenhaupt et al., Applied Physics B, 95(2), 245–259, (2009)

[2] M. Wollenhaupt et al., Phys. Rev. A, 73(6), 063409, (2006)

[3] T. Bayer et al., J. Phys. B, 41, 074007, (2008)

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