Berlin 2014 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 47: Attosecond physics
A 47.5: Vortrag
Donnerstag, 20. März 2014, 17:30–17:45, BEBEL E42
Noncollinear Optical Gating — •Christoph M. Heyl1, Fernando Brizuela1, Linnea Rading1, Piotr Rudawski1, Byunghoon Kim1, Samuel Bengtsson1, Stefanos Carlström1, Amélie Jarnac2, Aurelien Houard2, André Mysyrowicz2, Per Johnsson1, Johan Mauritsson1, Cord L. Arnold1, and Anne L’Huillier1 — 1Department of Physics, Lund University, Sweden — 2Laboratoire d’Optique Appliquée, École Polytechnique, France
The generation of isolated attosecond pulses via high-order harmonic generation (HHG), a key issue in attosecond science, requires CEP-stable few-cycle laser pulses and advanced gating techniques. Commonly used gating schemes rely on manipulating the driving field in order to confine the extreme ultraviolet (XUV) emission to a single half cycle. Here, a different approach is presented, based on driving HHG in a noncollinear geometry. A noncollinear generation scheme can be used to angularly streak the generated attosecond pulse train, a method, recently introduced in a conceptually different approach by Vincenti et al. [1]. The streaking effect gives access to multiple isolated attosecond pulses and can therefore be used to monitor generation dynamics. Our approach constitutes the first gating scheme which allows a direct separation of the generated XUV radiation from the fundamental field and does not require any manipulation of the driving field [2]. It is therefore ideally suited for pump-probe studies in the XUV regime and promises new advances for intra-cavity high-order harmonic generation.
[1] H. Vincenti et al., Phys. Rev. Lett. 108, 113904 (2012)
[2] C. M. Heyl et al., to be published