Exotic radiation from a photonic crystal excited by an ultrarelativistic electron beam

Horiuchi, Noriaki; Ochiai, Tetsuyuki; Inoue, Jun‐ichi; Segawa, Y.; Shibata, Yukio; Ishi, K.; Kondo, Yasuhiro; Kanbe, M.; Miyazaki, Hiroshi; Hinode, F.; Yamaguti, S.; Ohtaka, K.

doi:10.1103/physreve.74.056601

Cited by 15 publications

(11 citation statements)

References 23 publications

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“…Besides, experimental observations have been reported for millimeter waves emitted by electrons passing near photonic-crystal opals (Yamamoto et al, 2004). Finally, interesting effects due to finite size of the periodic structure along the direction of the beam have been noted (Ochiai and Ohtaka, 2006) and theoretically analyzed (Horiuchi et al, 2006).…”

Section: Smith-purcell Emissionmentioning

confidence: 95%

Optical excitations in electron microscopy

2010

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This review discusses how low-energy valence excitations created by swift electrons can render information on the optical response of structured materials with unmatched spatial resolution. Electron microscopes are capable of focusing electron beams on subnanometer spots and probing the target response either by analyzing electron energy losses or by detecting emitted radiation. Theoretical frameworks suited to calculate the probability of energy loss and light emission ͑cathodoluminescence͒ are reconsidered and compared with experimental results. More precisely, a quantum-mechanical description of the interaction between the electrons and the sample is discussed, followed by a powerful classical dielectric approach that can be applied in practice to more complex systems. The conditions are assessed under which classical and quantum-mechanical formulations are equivalent. The excitation of collective modes such as plasmons is studied in bulk materials, planar surfaces, and nanoparticles. Light emission induced by the electrons is shown to constitute an excellent probe of plasmons, combining subnanometer resolution in the position of the electron beam with nanometer resolution in the emitted wavelength. Both electron energy-loss and cathodoluminescence spectroscopies performed in a scanning mode of operation yield snapshots of plasmon modes in nanostructures with fine spatial detail as compared to other existing imaging techniques, thus providing an ideal tool for nanophotonics studies.

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Section: Smith-purcell Emissionmentioning

confidence: 95%

Optical excitations in electron microscopy

2010

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“…The Smith-Purcell effect critically depends on precise fabrication of such a periodic structure, which is why the substantial progress in nanofabrication techniques in recent years has revealed a large variety of new applications (e.g., Refs. [14][15][16][17][18][19][20]) based on the SmithPurcell effect. Interestingly, the inverse Smith-Purcell effect has also shown exciting possibilities [21,22], which consequently led to more advanced photonic crystal structures being used as promising platforms for particle acceleration by light excitation of a periodic structure [23][24][25].…”

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confidence: 99%

Spectrally and Spatially Resolved Smith-Purcell Radiation in Plasmonic Crystals with Short-Range Disorder

et al. 2017

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Electrons interacting with plasmonic structures can give rise to resonant excitations in localized plasmonic cavities and to collective excitations in periodic structures. We investigate the presence of resonant features and disorder in the conventional Smith-Purcell effect (electrons interacting with periodic structures) and observe the simultaneous excitation of both the plasmonic resonances and the collective excitations. For this purpose, we introduce a new scanning-electron-microscope-based setup that allows us to probe and directly image new features of electron-photon interactions in nanophotonic structures like plasmonic crystals with strong disorder. Our work creates new possibilities for probing nanostructures with free electrons, with potential applications that include tunable sources of short-wavelength radiation and plasmonic-based particle accelerators.

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“…The first theoretical investigations were made by Lampel in [13] but we believe that the method used in cited paper is an ambiguous one. Experimental investigations were made in the papers [14,15] where authors examined the millimeter wavelength radiation from 2D and 1D photonic crystals used as SPR targets. The 1D photonic crystal is just a periodical structure, consisting of a number of teflon (PTFE) cylinders [15].…”

Section: Introductionmentioning

confidence: 99%

“…Experimental investigations were made in the papers [14,15] where authors examined the millimeter wavelength radiation from 2D and 1D photonic crystals used as SPR targets. The 1D photonic crystal is just a periodical structure, consisting of a number of teflon (PTFE) cylinders [15]. Such structure is very similar to well-known grating and one may consider the radiation from it as SPR from the dielectric grating.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper we present the results of theoretical and experimental studies of the coherent SPR from the lamellar dielectric grating (or 1D photonic crystal) generated by the bunched electron beam with 6.1 MeV energy in the millimeter wavelength region. Up to our knowledge that is only the second experimental investigation of such radiation, the first one was performed by Horiuchi et al in [15]. The main our goal is to develop a physically clear model suitable for a case of simultaneous generation of coherent SPR and CR in periodic structure with an arbitrary permittivity that makes it possible to compare the radiation characteristics from the dielectric and metal gratings.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of coherent Smith-Purcell radiation generated by 6.1 MeV electron beam in metal and dielectric lamellar gratings

Sukhikh,

Naumenko,

Popov

et al. 2010

Preprint

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Coherent Smith-Purcell radiation generated by bunched electron beam in the lamellar metal and dielectric gratings in the millimeter wavelength range was compared theoretically and experimentally. For theoretical estimation a simple model suitable for both dielectric and metal gratings was developed. Experimental comparison was carried out using extracted bunched 6.1 MeV electron beam of the microtron at Nuclear Physics Institute (Tomsk Polytechnic University). Both theoretical estimations and experimental data showed the difference of the radiation characteristics from the lamellar metal and dielectric gratings. The radiation from the dielectric grating had peak structure not monotonic one and was more intense comparing with metal grating radiation in the wavelength less than coherent threshold. These differences may be useful for research and development of new compact monochromatic radiation sources in sub-THz and THz region.

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Exotic radiation from a photonic crystal excited by an ultrarelativistic electron beam

Cited by 15 publications

References 23 publications

Optical excitations in electron microscopy

Optical excitations in electron microscopy

Spectrally and Spatially Resolved Smith-Purcell Radiation in Plasmonic Crystals with Short-Range Disorder

Comparison of coherent Smith-Purcell radiation generated by 6.1 MeV electron beam in metal and dielectric lamellar gratings

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