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Updated: Jun 13, 2026

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
Published on: July 26, 2016
Multiphoton absorption and emission by interaction of swift electrons with evanescent light fields
F Javier García de Abajo1, Ana Asenjo-Garcia, Mathieu Kociak
1Instituto de Optica-CSIC, Serrano 121, Madrid, Spain. jga@cfmac.csic.es
Abstract:
We introduce a theory to describe the interaction of swift electrons with strong evanescent light fields. This allows us to explain recent experimental results of multiple energy losses and gains for electrons passing near illuminated nanostructures. A complex evolution of the electron state over attosecond time scales is unveiled, giving rise to non-Poissonian distributions of multiphoton features in the electron spectra. Prospects for application to nanoscale-resolved transmission electron microscopy and spectroscopy are discussed.
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