TY - JOUR
T1 - High energy photoelectron emission from gases using plasmonic enhanced near-fields
AU - Ciappina, M. F.
AU - Shaaran, T.
AU - Guichard, R.
AU - Pérez-Hernández, J. A.
AU - Roso, L.
AU - Arnold, M.
AU - Siegel, T.
AU - Zaïr, A.
AU - Lewenstein, M.
PY - 2013/10
Y1 - 2013/10
N2 - We study theoretically photoelectron emission in noble gases using plasmonic enhanced near-fields. We demonstrate that these fields have a great potential to generate high energy electrons by direct excitation from mid-infrared laser pulses of current femtosecond oscillators. Typically, these fields appear in the surroundings of plasmonic nanostructures with various geometrical shapes, such as bow-ties, metallic waveguides, metal nanoparticles and nanotips, when illuminated by a short laser pulse. Here, we consider metal nanospheres, in which the spatial decay of the near-field of the isolated nanoparticle can be approximated by an exponential function according to recent attosecond streaking measurements. We establish that the strong spatial inhomogeneous character of the enhanced near-field plays an important role in the above threshold ionization (ATI) process and leads to a significant extension in the photoelectron spectra. In this work, we employ the one-dimensional time-dependent Schrödinger equation to calculate the photoelectron emission of xenon atoms in such enhanced near-fields. Our findings are supported by classical calculations.
AB - We study theoretically photoelectron emission in noble gases using plasmonic enhanced near-fields. We demonstrate that these fields have a great potential to generate high energy electrons by direct excitation from mid-infrared laser pulses of current femtosecond oscillators. Typically, these fields appear in the surroundings of plasmonic nanostructures with various geometrical shapes, such as bow-ties, metallic waveguides, metal nanoparticles and nanotips, when illuminated by a short laser pulse. Here, we consider metal nanospheres, in which the spatial decay of the near-field of the isolated nanoparticle can be approximated by an exponential function according to recent attosecond streaking measurements. We establish that the strong spatial inhomogeneous character of the enhanced near-field plays an important role in the above threshold ionization (ATI) process and leads to a significant extension in the photoelectron spectra. In this work, we employ the one-dimensional time-dependent Schrödinger equation to calculate the photoelectron emission of xenon atoms in such enhanced near-fields. Our findings are supported by classical calculations.
UR - http://www.scopus.com/inward/record.url?scp=84885361464&partnerID=8YFLogxK
U2 - 10.1088/1612-2011/10/10/105302
DO - 10.1088/1612-2011/10/10/105302
M3 - 文章
AN - SCOPUS:84885361464
SN - 1612-2011
VL - 10
JO - Laser Physics Letters
JF - Laser Physics Letters
IS - 10
M1 - 105302
ER -