Spectral and spatial shaping of Smith-Purcell radiation
Name
PhysRevA.96.061801.pdf
Size
1.54 MB
Format
Adobe PDF
Checksum (MD5)
21a19011ceb063439ead99fbb75accb4
Author(s)
Remez, Roei
Shapira, Niv
Lereah, Yossi
Arie, Ady
Roques-Carmes, Charles
Tirole, Romain
Yang, Yi
Soljacic, Marin
Kaminer, Ido Efraim
Date Issued
December 2017
Journal
Physical Review A
Publisher
American Physical Society
Citation
Remez, Roei et al. "Spectral and spatial shaping of Smith-Purcell radiation." Physical Review A 96, 6 (December 2017): 061801(R) © 2017 American Physical Society
Version
Final published version
Abstract
The Smith-Purcell effect, observed when an electron beam passes in the vicinity of a periodic structure, is a promising platform for the generation of electromagnetic radiation in previously unreachable spectral ranges. However, most of the studies of this radiation were performed on simple periodic gratings, whose radiation spectrum exhibits a single peak and its higher harmonics predicted by a well-established dispersion relation. Here, we propose a method to shape the spatial and spectral far-field distribution of the radiation using complex periodic and aperiodic gratings. We show, theoretically and experimentally, that engineering multiple peak spectra with controlled widths located at desired wavelengths is achievable using Smith-Purcell radiation. Our method opens the way to free-electron-driven sources with tailored angular and spectral responses, and gives rise to focusing functionality for spectral ranges where lenses are unavailable or inefficient.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevA.96.061801
