Optical Excitations with Electron Beams: Challenges and Opportunities
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TLDR
Free electron beams such as those employed in electron microscopes have evolved into powerful tools to investigate photonic nanostructures with an unrivaled combination of spatial and spectral preciseness as discussed by the authors.Abstract:
Free electron beams such as those employed in electron microscopes have evolved into powerful tools to investigate photonic nanostructures with an unrivaled combination of spatial and spectral prec...read more
Citations
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I and i
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
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Imprinting the quantum statistics of photons on free electrons.
Raphael Dahan,Raphael Dahan,Alexey Gorlach,Alexey Gorlach,Urs Haeusler,Urs Haeusler,Aviv Karnieli,Aviv Karnieli,Ori Eyal,Ori Eyal,Peyman Yousefi,Peyman Yousefi,Mordechai Segev,Ady Arie,Ady Arie,Gadi Eisenstein,Gadi Eisenstein,Peter Hommelhoff,Ido Kaminer,Ido Kaminer +19 more
TL;DR: In this paper, the quantum statistics effects of photons on free-electron-light interactions are observed, revealing a transition from quantum walk to classical random walk on the freeelectron energy ladder, and the electron walker serves as the probe in non-destructive quantum detection, measuring the second order photon-correlation g (2)(0) and higher order g ( n )(0).
References
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Super-geometric electron focusing on the hexagonal Fermi surface of PdCoO$_2$
Maja D. Bachmann,Aaron Sharpe,Arthur Barnard,Carsten Putzke,Markus König,Seunghyun Khim,David Goldhaber-Gordon,Andrew P. Mackenzie,Philip J. W. Moll +8 more
TL;DR: In this article, the authors demonstrate that the nearly perfectly hexagonal Fermi surface of PdCoO2 gives rise to highly directional ballistic transport, which can be quantitatively predicted for arbitrary device geometry, based on the hexagonal cyclotron orbits appearing in this material.
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TL;DR: The data demonstrate that CL probes the electron-induced plasmon fields with nanometer accuracy, and the factors that determine the spatial resolution of CL as a deep-subwavelength imaging technique are resolved.
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TL;DR: A variety of ways are described in which photons can be used not only for ultrafast electron microscopy but also to enormously widen the energy range of spatially-resolved electron spectroscopy.
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TL;DR: In this article, the authors demonstrate how to directly measure the inelastic momentum transfer of surface plasmon modes via the energy-loss filtered deflection of a focused electron beam in a transmission electron microscope.
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Smith-Purcell radiation emission in aperiodic arrays
J. R. M. Saavedra,David Castells-Graells,F. Javier García de Abajo,F. Javier García de Abajo +3 more
TL;DR: In this article, the Smith-Purcell light emission produced by fast electrons moving parallel to linear aperiodic particle arrays was studied and two examples of quasiperiodic and hyperuniform arrays were considered.