Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.38: Poster
Wednesday, March 20, 2013, 16:00–18:30, Empore Lichthof
Stereo-Graphic Above-Threshold Ionization with 1.8 µm Few-Cycle Laser Pulses — •M. Möller1, B. E. Schmidt2, A. M. Sayler1, G. Vampa3, F. Legare2, D. M. Villeneuve3, G. G. Paulus1, and P. B. Corkum3 — 1Helmholtz Institut Jena, Institut für Optik und Quantenelektronik, Max-Wien-Platz 1, 07743 Jena — 2INRS,-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Qc, J3X1S2, Canada — 3JASLab, University of Ottawa/NRC, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
Stereo-graphic above-threshold ionization (SATI) hase been the first phenomenon to show carrier-envelope phase (CEP) effects. It is now frequently used to characterize the CEP in strong-field light-matter interaction. So far, the concepts of the SATI-based CEP measurement have been established for pulses with a center wavelength around 800 nm. Here we present preliminary results from SATI measurements with passively CEP stable few-cycle pulses in the infrared spectral region around 1.8 µm. The CEP was continously ramped over more than 8 hours while the energy-dependent SATI spectra were recorded. The results show stronger CEP effects than reported previously particularly for the so-called direct electrons with energies around 2 UP. In addition, large CEP-induced asymmetries for the left-right electron yield are found.