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Impact of oblique reflections on the generation of isolated attosecond pulses by polarization gating

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Title: Impact of oblique reflections on the generation of isolated attosecond pulses by polarization gating
Authors: Picot, C., Rivas, D. Diaz, Ouahioune, N., Hoff, D., Perez, L., Skupin, S., Raab, A. K., Guo, C., Maroju, P. Kumar, L'Huillier, A., Viotti, A. L., Arnold, C. L., Gisselbrecht, M., Constant, E.
Contributors: Lund University, Faculty of Science, Department of Physics, Atomic Physics, Lunds universitet, Naturvetenskapliga fakulteten, Fysiska institutionen, Atomfysik, Originator, Lund University, Profile areas and other strong research environments, Lund University Profile areas, LU Profile Area: Light and Materials, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Lunds universitets profilområden, LU profilområde: Ljus och material, Originator, Lund University, Profile areas and other strong research environments, Strategic research areas (SRA), NanoLund: Centre for Nanoscience, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Strategiska forskningsområden (SFO), NanoLund: Centre for Nanoscience, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Nanoscience and Semiconductor Technology, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Nanovetenskap och halvledarteknologi, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Photon Science and Technology, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Avancerade ljuskällor, Originator, Lund University, Faculty of Engineering, LTH, Other operations, LTH, Lund Laser Centre, LLC, Lunds universitet, Lunds Tekniska Högskola, Annan verksamhet, LTH, Lunds lasercentrum, LLC, Originator, Lund University, Faculty of Science, Department of Physics, Synchrotron Radiation Research, Lunds universitet, Naturvetenskapliga fakulteten, Fysiska institutionen, Synkrotronljusfysik, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Aerosols, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Aerosoler, Originator
Source: Optics Letters. 50(21):6738-6741
Subject Terms: Natural Sciences, Physical Sciences, Atom and Molecular Physics and Optics, Naturvetenskap, Fysik, Atom- och molekylfysik och optik (Här ingår: Kemisk fysik, kvantoptik)
Description: Isolated attosecond pulses are often generated via sub-optical-cycle polarization gating. This technique, based on the precise control of the time-dependent polarization of the infrared driver pulse, enables strong temporal confinement of the extreme ultraviolet (XUV) emission from high-order harmonic generation (HHG) in gases. In this work, we study the influence of pulse propagation between the position where the polarization gate is created and the nonlinear HHG medium on the generation of isolated attosecond pulses. Oblique reflections on mirrors, in particular, lead to a significant polarization-dependent carrier phase shift and group delay. In our experiments, seven reflections of the few-cycle infrared driver pulse on metallic mirrors at 45° lead to a delay of 2.8 fs, which is large enough to destroy the polarization gate. When these effects are precompensated, efficient XUV confinement via sub-cycle polarization gating is evidenced by continuous XUV spectra which strongly depend on the carrier-envelope phase (CEP).
Access URL: https://doi.org/10.1364/OL.572691
Database: SwePub
Description
ISSN:15394794
DOI:10.1364/OL.572691