Generation of traveling surface plasmon waves by free-electron impact.
نویسندگان
چکیده
The injection of a beam of free 50 keV electrons into an unstructured gold surface creates a highly localized source of traveling surface plasmons with spectra centered below the surface plasmon resonance frequency. The plasmons were detected by a controlled decoupling into light with a grating at a distance from the excitation point. The dominant contribution to the plasmon generation appears to come from the recombination of d-band holes created by the electron beam excitation.
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ورودعنوان ژورنال:
- Nano letters
دوره 6 6 شماره
صفحات -
تاریخ انتشار 2006