title: High-harmonic and single attosecond pulse generation using plasmonic field enhancement in ordered arrays of gold nanoparticles with chirped laser pulses.
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.
authors: Laboratory of solid state laser sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. yangyy@semi.ac.cn
authors: Ying-Ying
authors: YY
authors: Yang
authors: Armin
authors: A
authors: Scrinzi
authors: Anton
authors: A
authors: Husakou
authors: Qian-Guang
authors: QG
authors: Li
authors: Sarah L
authors: SL
authors: Stebbings
authors: Frederik
authors: F
authors: Süßmann
authors: Hai-Juan
authors: HJ
authors: Yu
authors: Seungchul
authors: S
authors: Kim
authors: Eckart
authors: E
authors: Rühl
authors: Joachim
authors: J
authors: Herrmann
authors: Xue-Chun
authors: XC
authors: Lin
authors: Matthias F
authors: MF
authors: Kling
mesh_terms: D006046:Gold / Q000737:chemistry* / Q000528:radiation effects; D007834:Lasers; D008029:Lighting / Q000379:methods*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D006046:Gold