Ultrafast, surface plasmon-enhanced, au nanorod optical field electron emitter arrays

R. G. Hobbs, Y. Yang, P. D. Keathley, Eva De Leo, W. S. Graves, K. K. Berggren, A. Fallahi, F. X. Kärtner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work we demonstrate the design, fabrication and characterization of ultrafast, surface-plasmon enhanced Au nanorod photofield emitter arrays. We present a quantitative analysis of charge yield from plasmonic Au nanorod arrays fabricated by high-resolution electron beam lithography and triggered by 35 fs pulses of 800 nm light. We have accurately modeled both the optical field enhancement of Au nanorods in high-density arrays, and electron emission from those nanorods. We have considered the effects of surface plasmon damping induced by metallic interface layers at the substrate/nanorod interface on electron emission. We have identified the peak optical field at which the electron emission mechanism transitions from a 3-photon absorption mechanism to strong-field tunneling emission. Moreover, we have investigated the effects of nanorod array density on nanorod charge yield, including measurement of space-charge effects.

Original languageEnglish (US)
Title of host publicationTechnical Digest - 2014 27th International Vacuum Nanoelectronics Conference, IVNC 2014
EditorsHans-Heinrich Braun, Oliver Groening, Martin Paraliev, Thomas Feurer, Soichiro Tsujino, Jens Gobrecht
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages16-17
Number of pages2
ISBN (Electronic)9781479953080
DOIs
StatePublished - 2014
Event2014 27th International Vacuum Nanoelectronics Conference, IVNC 2014 - Engelberg, Switzerland
Duration: Jul 6 2014Jul 10 2014

Publication series

NameTechnical Digest - 2014 27th International Vacuum Nanoelectronics Conference, IVNC 2014

Other

Other2014 27th International Vacuum Nanoelectronics Conference, IVNC 2014
CountrySwitzerland
CityEngelberg
Period7/6/147/10/14

Keywords

  • electron emitter array
  • nanostructures
  • photocathode
  • plasmonics
  • ultrafast optics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Hobbs, R. G., Yang, Y., Keathley, P. D., De Leo, E., Graves, W. S., Berggren, K. K., Fallahi, A., & Kärtner, F. X. (2014). Ultrafast, surface plasmon-enhanced, au nanorod optical field electron emitter arrays. In H-H. Braun, O. Groening, M. Paraliev, T. Feurer, S. Tsujino, & J. Gobrecht (Eds.), Technical Digest - 2014 27th International Vacuum Nanoelectronics Conference, IVNC 2014 (pp. 16-17). [6894737] (Technical Digest - 2014 27th International Vacuum Nanoelectronics Conference, IVNC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IVNC.2014.6894737