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Title: Optical field emission from resonant gold nanorods driven by femtosecond mid-infrared pulses

We demonstrate strong-field photoelectron emission from gold nanorods driven by femtosecond mid-infrared optical pulses. The maximum photoelectron yield is reached at the localized surface plasmon resonance, indicating that the photoemission is governed by the resonantly-enhanced optical near-field. The wavelength- and field-dependent photoemission yield allows for a noninvasive determination of local field enhancements, and we obtain intensity enhancement factors close to 1300, in good agreement with finite-difference time domain computations.
Authors:
 [1] ;  [2] ; ; ;  [3] ;  [4]
  1. Department of Applied Physics, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei Tokyo 184-8588 (Japan)
  2. (Japan)
  3. 4th Physical Institute – Solids and Nanostructures, University of Göttingen, 37077 Göttingen (Germany)
  4. Institute of Industrial Science, the University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505 (Japan)
Publication Date:
OSTI Identifier:
22493950
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCULATION METHODS; FIELD EMISSION; FINITE DIFFERENCE METHOD; GOLD; INTERMEDIATE INFRARED RADIATION; NANOSTRUCTURES; PHOTOEMISSION; PLASMONS; RESONANCE; SURFACES; WAVELENGTHS; YIELDS