Volume 111, Number 2, July 2015
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||19 August 2015|
Generation of ultrashort extreme-ultraviolet pulses by enhanced plasmonic near-fields in metallic nanoparticles
1 Department of Physics, Southeast University - Nanjing 210096, China
2 Institute for Quantum Computing, University of Waterloo - Ontario N2L 3G1, Canada
3 Department of Applied Physics, East China Jiaotong University - Nanchang 330013, China
4 Institute of Photonics Technologies, National Tsing-Hua University - Hsinchu 300, Taiwan
Received: 3 May 2015
Accepted: 20 July 2015
We investigate high-order harmonic generation in a metallic-nanoparticle–quantum-dot hybrid system. Driven by a moderate electric field intensity (1012 W/cm²) Guassian-shape few-cycle pulse which is chirped by a hyperbolic-tangent-form carrier envelope phase, the hybrid system can generate extreme-ultraviolet super-continuum harmonics (13.3 eV maximal photon energy) and isolated ultrashort pulses (3.03-4.7fs FWHM). Numerical simulation results reveal that the plasmonic field enhancement could extend the cutoff order and continuum region in harmonic spectra. The extension effect by plasmonic enhancement could be well understood theoretically by the semi-classical two-level atom model.
© EPLA, 2015
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