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

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4927151· OSTI ID:22493950

Kusa, F. ^[1]; Echternkamp, K. E.; Herink, G.; Ropers, C. ^[2]

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1. Department of Applied Physics, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei Tokyo 184-8588 (Japan)
2. 4th Physical Institute – Solids and Nanostructures, University of Göttingen, 37077 Göttingen (Germany)

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.

• OSTI ID: 22493950
• Journal Information: AIP Advances, Vol. 5, Issue 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCULATION METHODS
FIELD EMISSION
FINITE DIFFERENCE METHOD
GOLD
INTERMEDIATE INFRARED RADIATION
NANOSTRUCTURES
PHOTOEMISSION
PLASMONS
RESONANCE
SURFACES
WAVELENGTHS
YIELDS