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

Fumiya Kusa | Zendy; K. E. Echternkamp | Zendy; Georg Herink | Zendy; Claus Ropers | Zendy; Satoshi Ashihara | Zendy

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

Author(s) -

Fumiya Kusa,

K. E. Echternkamp,

Georg Herink,

Claus Ropers,

Satoshi Ashihara

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4927151

Subject(s) - nanorod , femtosecond , surface plasmon resonance , materials science , infrared , resonance (particle physics) , plasmon , x ray photoelectron spectroscopy , field (mathematics) , wavelength , surface plasmon , photoemission spectroscopy , optoelectronics , optics , atomic physics , laser , physics , nuclear magnetic resonance , nanotechnology , nanoparticle , mathematics , pure mathematics

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

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