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Proceedings Paper

Spatiotemporal characterization and control of lightfield nanolocalization on metallic nanostructures by nonlinear-PEEM
Author(s): S. H. Chew; K. Pearce; S. Nobis; C. Späth; A. Spreen; S. Radünz; Y. Yang; J. Schmidt; U. Kleineberg
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Paper Abstract

The excitation of surface plasmons in metallic nanostructures by resonant ultrashort femtosecond light pulses produces interesting phenomena such as optical field nanolocalization, nanoscale electric field enhancement and ultrafast sub-femtosecond beating of the plasmon eigenmodes. Nonlinear two-photon photoemission electron microscopy has proven to be a powerful tool for spatiotemporal characterization of such effects on the nanoscale below the optical diffraction limit. As a step toward using intense, few-cycle 4 femtosecond laser pulses to excite and control surface plasmons, we report on the multiphoton-photoemission electron microscopy experiments on lithographically-fabricated gold nanostructures excited by these few-cycle laser pulses. In addition, the effects of the shape and size of silver plasmonic structures, as well as the polarization of the excitation source are examined in the two-photon photoemission induced by picosecond laser pulses. Potential approaches toward spatiotemporal control of lightfield nanolocalization are described.

Paper Details

Date Published: 9 October 2012
PDF: 9 pages
Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84571C (9 October 2012); doi: 10.1117/12.930020
Show Author Affiliations
S. H. Chew, Ludwig-Maximilians-Univ. München (Germany)
Max Planck Institute of Quantum Optics (Germany)
K. Pearce, Ludwig-Maximilians-Univ. München (Germany)
Max Planck Institute of Quantum Optics (Germany)
S. Nobis, Ludwig-Maximilians-Univ. München (Germany)
C. Späth, Ludwig-Maximilians-Univ. München (Germany)
A. Spreen, Ludwig-Maximilians-Univ. München (Germany)
S. Radünz, Ludwig-Maximilians-Univ. München (Germany)
Y. Yang, Institute of Semiconductors (China)
J. Schmidt, Ludwig-Maximilians-Univ. München (Germany)
U. Kleineberg, Ludwig-Maximilians-Univ. München (Germany)
Max Planck Institute of Quantum Optics (Germany)


Published in SPIE Proceedings Vol. 8457:
Plasmonics: Metallic Nanostructures and Their Optical Properties X
Mark I. Stockman, Editor(s)

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