Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes
Electron beams in electron microscopes are efficient probes of optical near-fields, thanks to spectroscopy tools like electron energy-loss spectroscopy and cathodoluminescence spectroscopy. Nowadays, we can acquire multitudes of information about nanophotonic systems by applying space-resolved diffr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-09-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2020-0263 |
| _version_ | 1818727992139972608 |
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| author | Christopher Joshua Taleb Masoud Maity Achyut Hentschel Mario Giessen Harald Talebi Nahid |
| author_facet | Christopher Joshua Taleb Masoud Maity Achyut Hentschel Mario Giessen Harald Talebi Nahid |
| author_sort | Christopher Joshua |
| collection | DOAJ |
| description | Electron beams in electron microscopes are efficient probes of optical near-fields, thanks to spectroscopy tools like electron energy-loss spectroscopy and cathodoluminescence spectroscopy. Nowadays, we can acquire multitudes of information about nanophotonic systems by applying space-resolved diffraction and time-resolved spectroscopy techniques. In addition, moving electrons interacting with metallic materials and optical gratings appear as coherent sources of radiation. A swift electron traversing metallic nanostructures induces polarization density waves in the form of electronic collective excitations, i.e., the so-called plasmon polariton. Propagating plasmon polariton waves normally do not contribute to the radiation; nevertheless, they diffract from natural and engineered defects and cause radiation. Additionally, electrons can emit coherent light waves due to transition radiation, diffraction radiation, and Smith-Purcell radiation. Some of the mechanisms of radiation from electron beams have so far been employed for designing tunable radiation sources, particularly in those energy ranges not easily accessible by the state-of-the-art laser technology, such as the THz regime. Here, we review various approaches for the design of coherent electron-driven photon sources. In particular, we introduce the theory and nanofabrication techniques and discuss the possibilities for designing and realizing electron-driven photon sources for on-demand radiation beam shaping in an ultrabroadband spectral range to be able to realize ultrafast few-photon sources. We also discuss our recent attempts for generating structured light from precisely fabricated nanostructures. Our outlook for the realization of a correlative electron-photon microscope/spectroscope, which utilizes the above-mentioned radiation sources, is also described. |
| first_indexed | 2024-12-17T22:22:54Z |
| format | Article |
| id | doaj.art-20ebe5076e8a4bc6873469831a2346d4 |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-17T22:22:54Z |
| publishDate | 2020-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-20ebe5076e8a4bc6873469831a2346d42022-12-21T21:30:25ZengDe GruyterNanophotonics2192-86062192-86142020-09-019154381440610.1515/nanoph-2020-0263Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopesChristopher Joshua0Taleb Masoud1Maity Achyut2Hentschel Mario3Giessen Harald4Talebi Nahid5Institute for Experimental and Applied Physics, Christian Albrecht University, 24107Kiel, GermanyInstitute for Experimental and Applied Physics, Christian Albrecht University, 24107Kiel, GermanyMax Planck Institute for Solid State Physics, 70569Stuttgart, Germany4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70550Stuttgart, Germany4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70550Stuttgart, GermanyInstitute for Experimental and Applied Physics, Christian Albrecht University, 24107Kiel, GermanyElectron beams in electron microscopes are efficient probes of optical near-fields, thanks to spectroscopy tools like electron energy-loss spectroscopy and cathodoluminescence spectroscopy. Nowadays, we can acquire multitudes of information about nanophotonic systems by applying space-resolved diffraction and time-resolved spectroscopy techniques. In addition, moving electrons interacting with metallic materials and optical gratings appear as coherent sources of radiation. A swift electron traversing metallic nanostructures induces polarization density waves in the form of electronic collective excitations, i.e., the so-called plasmon polariton. Propagating plasmon polariton waves normally do not contribute to the radiation; nevertheless, they diffract from natural and engineered defects and cause radiation. Additionally, electrons can emit coherent light waves due to transition radiation, diffraction radiation, and Smith-Purcell radiation. Some of the mechanisms of radiation from electron beams have so far been employed for designing tunable radiation sources, particularly in those energy ranges not easily accessible by the state-of-the-art laser technology, such as the THz regime. Here, we review various approaches for the design of coherent electron-driven photon sources. In particular, we introduce the theory and nanofabrication techniques and discuss the possibilities for designing and realizing electron-driven photon sources for on-demand radiation beam shaping in an ultrabroadband spectral range to be able to realize ultrafast few-photon sources. We also discuss our recent attempts for generating structured light from precisely fabricated nanostructures. Our outlook for the realization of a correlative electron-photon microscope/spectroscope, which utilizes the above-mentioned radiation sources, is also described.https://doi.org/10.1515/nanoph-2020-0263cathodoluminescencecoherenceelectron-driven photon sourcemechanisms of radiation |
| spellingShingle | Christopher Joshua Taleb Masoud Maity Achyut Hentschel Mario Giessen Harald Talebi Nahid Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes Nanophotonics cathodoluminescence coherence electron-driven photon source mechanisms of radiation |
| title | Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes |
| title_full | Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes |
| title_fullStr | Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes |
| title_full_unstemmed | Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes |
| title_short | Electron-driven photon sources for correlative electron-photon spectroscopy with electron microscopes |
| title_sort | electron driven photon sources for correlative electron photon spectroscopy with electron microscopes |
| topic | cathodoluminescence coherence electron-driven photon source mechanisms of radiation |
| url | https://doi.org/10.1515/nanoph-2020-0263 |
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