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Free-Electron–Bound-Electron Resonant Interaction
Physical Review Letters ( IF 9.227 ) Pub Date : 2020-02-13 , DOI: 10.1103/physrevlett.124.064801
Avraham Gover and Amnon Yariv

Here we present a new paradigm of free-electron–bound-electron resonant interaction. This concept is based on a recent demonstration of the optical frequency modulation of the free-electron quantum electron wave function (QEW) by an ultrafast laser beam. We assert that pulses of such QEWs correlated in their modulation phase, interact resonantly with two-level systems, inducing resonant quantum transitions when the transition energy ΔE=ℏω21 matches a harmonic of the modulation frequency ω21=nωb. Employing this scheme for resonant cathodoluminescence and resonant EELS combines the atomic level spatial resolution of electron microscopy with the high spectral resolution of lasers.
更新日期:2020-02-13

 

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