期刊
JOURNAL OF MODERN OPTICS
卷 64, 期 10-11, 页码 995-1003出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340.2016.1267272
关键词
Ultrafast nanophysics; carrier-envelope phase; nanoparticles; strong-field phenomena
类别
资金
- Max Planck Society
- DFG [SPP1840, SPP1391]
- Cluster of Excellence: Munich-Centre for Advanced Photonics (MAP)
- EU via the ERC grant ATTOCO [307203]
- Global Research Laboratory Program [2009-00439]
- Max Planck POSTECH/KOREA Research Initiative Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2016K1A4A4A01922028]
- BMBF [05K13KE2]
- European Research Council (ERC) [307203] Funding Source: European Research Council (ERC)
The excitation of nanoscale near-fields with ultrashort and intense laser pulses of well-defined waveform enables strongly spatially and temporally localized electron emission, opening up the possibility for the generation of attosecond electron pulses. Here, we investigate the electron photoemission from isolated nanoparticles of different materials in few-cycle laser fields at intensities where the Coulomb field of the ionized electrons and residual ions significantly contribute to the electron acceleration process. The dependences of the electron cut-off energy on the material's dielectric properties and electron binding energy are investigated systematically in both experiments and semi-classical simulations. We find that for sufficiently high near-field intensities the material dependence of the acceleration in the enhanced near-fields is quenched by many-particle charge-interaction.
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