Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Electron-beam excited photon emission from monopole modes of a plasmonic nano-disc

Not Accessible

Your library or personal account may give you access

Abstract

Plasmonic dark modes are not easy to be observed in the far field due to their weak photon emission. By contrast, it has been shown that a dark mode can be excited effectively by a near-field source such as an electron beam. In this Letter, we show theoretically that the photon emission from the monopole-like dark mode supported on a plasmonic nano-disc could be unexpectedly strong when excited by an electron beam through its hole. Even though this monopole mode is considered to be dark, it is found that the emission can be even “brighter” than the dipolar bright modes when the electron speed is higher than 0.6c. Due to the high conversion efficiency from electron energy loss to photon energy, the results could also suggest an optical method for the detection of high-energy electrons passing through the hole with negligible changes in electron speed.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Electron-induced photon emission above the quantum cutoff due to time-energy uncertainty

E. Ekici, P. Kapitza, C. A. Bobisch, and R. Möller
Opt. Lett. 42(22) 4585-4588 (2017)

Localized excitation of polarized light emission by cathodoluminescence spectroscopy

Yuhui Hu, Fei Chen, Yajun Gao, Xiang Xiong, Ruwen Peng, and Mu Wang
Opt. Lett. 43(1) 158-161 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved