Enhanced photon emission from free electron excitation of a nanowell
Efficient nanoscale light sources are sought after for applications such as sensing, imaging, and the development of photonic circuits. In particular, free electron light sources have gained much attention due to their ability to tune and direct light emission. Here, we show that radiation from free...
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sg-ntu-dr.10356-1549492023-02-28T20:07:09Z Enhanced photon emission from free electron excitation of a nanowell Nussupbekov, Ayan Adamo, Giorgio So, Jin-Kyu Wu, Lin Chong, Yidong Wong, Liang Jie School of Physical and Mathematical Sciences School of Electrical and Electronic Engineering Institute of High Perfomance Computing, A*STAR Centre for Disruptive Photonic Technologies (CDPT) Science::Physics::Optics and light Plasmonic Nanolasers Surface-Plasmons Efficient nanoscale light sources are sought after for applications such as sensing, imaging, and the development of photonic circuits. In particular, free electron light sources have gained much attention due to their ability to tune and direct light emission. Here, we show that radiation from free electrons passing through a 100 nm wide nanohole can reach as high as 90% of the theoretical limit. This is accomplished through the introduction of a circular nanoridge around the hole to form a structure we call the nanowell. The power radiated from the nanowell exceeds that of a regular nanohole by over 100 times and that of nanoholes surrounded by other features, such as bullseyes, by similar enhancement factors. Upon varying the structural parameters of the nanowell, the peak output wavelength can be tuned over a broad frequency range from the visible to the near-infrared. This reveals a route to extracting power from free electrons via material nanopatterning. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Nanyang Technological University Published version This research was supported by the Agency for Science, Technology and Research (A∗ STAR) Science and Engineering Research Council (Grant No. A1984c0043) and Singapore MOE Academic Research Fund Tier 3 Grant No. MOE2016-T3-1-006, Tier 1 Grant Nos. RG187/18 and RG148/20, and Tier 2 Grant No. MOE2019- T2-2-085. L.J.W. acknowledges the support of the Nanyang Assistant Professorship Startup Grant. A.N. acknowledges the A∗ STAR Singapore International Graduate Award (SINGA) scholarship 2022-05-27T02:44:58Z 2022-05-27T02:44:58Z 2021 Journal Article Nussupbekov, A., Adamo, G., So, J., Wu, L., Chong, Y. & Wong, L. J. (2021). Enhanced photon emission from free electron excitation of a nanowell. APL Photonics, 6(9), 096101-. https://dx.doi.org/10.1063/5.0054456 2378-0967 https://hdl.handle.net/10356/154949 10.1063/5.0054456 2-s2.0-85114798956 9 6 096101 en A1984c0043 MOE2016-T3-1-006 RG148/20 MOE2019-T2-2-085 RG187/18 APL Photonics © 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/5.0054456. application/pdf |
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Science::Physics::Optics and light Plasmonic Nanolasers Surface-Plasmons Nussupbekov, Ayan Adamo, Giorgio So, Jin-Kyu Wu, Lin Chong, Yidong Wong, Liang Jie Enhanced photon emission from free electron excitation of a nanowell |
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Efficient nanoscale light sources are sought after for applications such as sensing, imaging, and the development of photonic circuits. In particular, free electron light sources have gained much attention due to their ability to tune and direct light emission. Here, we show that radiation from free electrons passing through a 100 nm wide nanohole can reach as high as 90% of the theoretical limit. This is accomplished through the introduction of a circular nanoridge around the hole to form a structure we call the nanowell. The power radiated from the nanowell exceeds that of a regular nanohole by over 100 times and that of nanoholes surrounded by other features, such as bullseyes, by similar enhancement factors. Upon varying the structural parameters of the nanowell, the peak output wavelength can be tuned over a broad frequency range from the visible to the near-infrared. This reveals a route to extracting power from free electrons via material nanopatterning. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Nussupbekov, Ayan Adamo, Giorgio So, Jin-Kyu Wu, Lin Chong, Yidong Wong, Liang Jie |
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Article |
author |
Nussupbekov, Ayan Adamo, Giorgio So, Jin-Kyu Wu, Lin Chong, Yidong Wong, Liang Jie |
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Nussupbekov, Ayan |
title |
Enhanced photon emission from free electron excitation of a nanowell |
title_short |
Enhanced photon emission from free electron excitation of a nanowell |
title_full |
Enhanced photon emission from free electron excitation of a nanowell |
title_fullStr |
Enhanced photon emission from free electron excitation of a nanowell |
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Enhanced photon emission from free electron excitation of a nanowell |
title_sort |
enhanced photon emission from free electron excitation of a nanowell |
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2022 |
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https://hdl.handle.net/10356/154949 |
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