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)