Abstract
The field enhancement of individual cross-shaped nanoantennas for normal incident light has been measured by the relative photoemission yield using a photoemission electron microscope. We not only measured the electron yield in dependence on the intensity of infrared light (800 nm, 100 fs), but also the polarization dependence. In the normal incidence geometry, the electrical field vector of the illuminating light lies in the surface plane of the sample, independent of the polarization state. Strong yield variations due to an out-of-plane field component as well as changes in the polarization state described by the Fresnel laws are avoided. The electron yield is related to the near-field enhancement as a function of the polarization state of the incident light. The polarization dependence is well explained by numerical simulations.
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References
U. Kreibig, M. Vollmer, Optical Properties of Metal Clusters (Springer, New York, 1995)
D.P. Fromm, A. Sundaramurthy, P.J. Schuck, G. Kino, W.E. Moerner, Gap-dependent optical coupling of single bowtie nanoantennas resonant in the visible. Nano Lett. 4, 957 (2004)
L. Novotny, B. Hecht, Principles of Nano-optics (Cambridge University Press, Cambridge, 2006)
E. Prodan, C. Radloff, N.J. Halas, P. Nordlander, A hybridization model for the plasmon response of complex nanostructures. Science 302, 5644 (2003)
P. Nordlander, C. Oubre, E. Prodan, K. Li, M.I. Stockman, Plasmon hybridizaton in nanoparticle dimers. Nano Lett. 4, 899 (2004)
P. Nordlander, F. Le, Plasmonic structure and electromagnetic field enhancements in the metallic nanoparticle-film system. Appl. Phys. B 84, 35 (2006)
T. Okamoto, I. Yamaguchi, Optical absorption study of the surface plasmon resonance in gold nanoparticles immobilized onto a gold substrate by self-assembly technique. J. Phys. Chem. B 107, 10321 (2003)
Y. Uchiho, K. Kajikawa, Evaluation of gap distance between gold nanospheres and a gold substrate by absorption spectroscopy. Chem. Phys. Lett. 478, 211 (2009)
S. Linic, P. Christopher, D.B. Ingram, Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy. Nat. Mater. 10, 911 (2011)
S.F. Heucke, F. Baumann, G.P. Acuna, P.M.D. Severin, S.W. Stahl, M. Strackharn, I.H. Stein, P. Altpeter, P. Tinnefeld, H.E. Gaub, Placing individual molecules in the center of nanoapertures. Nano Lett. 14(2), 391–395 (2013)
C.D. Stanciu, F. Hansteen, A.V. Kimel, A. Kirilyuk, A. Tsukamoto, A. Itoh, T. Rasing, All-optical magnetic recording with circularly polarized light. Phys. Rev. Lett. 99, 047601 (2007)
P. Klaer, F. Schertz, G. Schönhense, H.J. Elmers, Spin-polarized photoelectrons resonantly excited by circularly polarized light from a fractional Ag film on GaAs(100). Phys. Rev. B 88, 214425 (2013)
P. Biagioni, J.S. Huang, L. Duò, M. Finazzi, B. Hecht, Cross resonant optical antenna. Phys. Rev. Lett. 102, 256801 (2009)
R. Mohammadi, A. Unger, H.J. Elmers, G. Schönhense, M.Z. Shushtari, M. Kreiter, Manipulating near field polarization beyond the diffraction limit. Appl. Phys. B 104, 65 (2011)
C. Sönnichsen, T. Franzl, T. Wilk, G. von Plessen, J. Feldmann, O. Wilson, P. Mulvaney, Drastic reduction of plasmon damping in gold nanorods. Phys. Rev. Lett. 88, 077402 (2002)
M.I. Stockman, Nanoscience dark-hot resonances. Nature 467, 541 (2010)
F. Schertz, M. Schmelzeisen, R. Mohammadi, M. Kreiter, H.-J. Elmers, G. Schönhense, Near field of strongly coupled plasmons: uncovering dark modes. Nano Lett. 12, 1885 (2012)
P. Klaer, G. Razinskas, M. Lehr, K. Krewer, F. Schertz, W. Xiao-Fei, B. Hecht, G. Schönhense, H.J. Elmers, Photoemission electron microscopy and finite-element simulation of plasmonic angular momentum confinement in cross resonant optical antennas. Appl. Phys. Lett. 106, 261101 (2015)
M. Bauer, A. Marienfeld, M. Aeschlimann, Prog. Surf. Sci. 90, 319 (2015)
N.E. Karatzas, A.T. Georges, Opt. Commun. 81, 479 (2006)
M. Aeschlimann, T. Brixner, A. Fischer, C. Kramer, P. Melchior, W. Pfeiffer, C. Schneider, C. Struber, P. Tuchscherer, D. Voronine, Science 333, 1723 (2011)
M. Schnell, A. Garcia-Etxarri, J. Alkorta, J. Aizpurua, R. Hillenbrand, Phase-resolved mapping of the near-field vector and polarization state in nanoscale antenna gaps. Nano Lett. 10, 3524 (2010)
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The authors are grateful for financial support from the Deutsche Forschungsgemeinschaft (DFG EL/16-2, SPP1391) and by the Research Center for Complex and Emergent Materials (CINEMA).
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This article is part of the topical collection “Ultrafast Nanooptics” guest edited by Martin Aeschlimann and Walter Pfeiffer.
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Klaer, P., Razinskas, G., Lehr, M. et al. Polarization dependence of plasmonic near-field enhanced photoemission from cross antennas. Appl. Phys. B 122, 136 (2016). https://doi.org/10.1007/s00340-016-6410-3
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DOI: https://doi.org/10.1007/s00340-016-6410-3