1. High-harmonic and single attosecond pulse generation using plasmonic field enhancement in ordered arrays of gold nanoparticles with chirped laser pulses
- Author
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Matthias F. Kling, Anton Husakou, Frederik Süßmann, Sarah L. Stebbings, Qian-Guang Li, Ying-Ying Yang, Eckart Rühl, Armin Scrinzi, Joachim Herrmann, Xuechun Lin, Haijuan Yu, and Seungchul Kim
- Subjects
Physics ,business.industry ,Lasers ,Attosecond ,Surface plasmon ,Metal Nanoparticles ,Physics::Optics ,Surface Plasmon Resonance ,Radiation ,Laser ,Atomic and Molecular Physics, and Optics ,law.invention ,Optics ,law ,Extreme ultraviolet ,Electric field ,Materials Testing ,Physics::Atomic and Molecular Clusters ,Chirp ,Scattering, Radiation ,Optoelectronics ,Gold ,business ,Lighting ,Plasmon - Abstract
Coherent XUV sources, which may operate at MHz repetition rate, could find applications in high-precision spectroscopy and for spatio-time-resolved measurements of collective electron dynamics on nanostructured surfaces. We theoretically investigate utilizing the enhanced plasmonic fields in an ordered array of gold nanoparticles for the generation of high-harmonic, extreme-ultraviolet (XUV) radiation. By optimization of the chirp of ultrashort laser pulses incident on the array, our simulations indicate a potential route towards the temporal shaping of the plasmonic near-field and, in turn, the generation of single attosecond pulses. The inherent effects of inhomogeneity of the local fields on the high-harmonic generation are analyzed and discussed. While taking the inhomogeneity into account does not affect the optimal chirp for the generation of a single attosecond pulse, the cut-off energy of the high-harmonic spectrum is enhanced by about a factor of two.
- Published
- 2013
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