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dc.contributor.authorHermann, Benedikt
dc.contributor.authorHaeusler, Urs
dc.contributor.authorYadav, Gyanendra
dc.contributor.authorKirchner, Adrian
dc.contributor.authorFeurer, Thomas
dc.contributor.authorWelsch, Carsten
dc.contributor.authorHommelhoff, Peter
dc.contributor.authorIschebeck, Rasmus
dc.date.accessioned2022-05-30T15:03:03Z
dc.date.available2022-05-30T15:03:03Z
dc.date.issued2022-04-20
dc.identifier.issn2330-4022
dc.identifier.other35480494
dc.identifier.otherPMC9026277
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/337612
dc.description.abstractTHz radiation finds various applications in science and technology. Pump-probe experiments at free-electron lasers typically rely on THz radiation generated by optical rectification of ultrafast laser pulses in electro-optic crystals. A compact and cost-efficient alternative is offered by the Smith-Purcell effect: a charged particle beam passes a periodic structure and generates synchronous radiation. Here, we employ the technique of photonic inverse design to optimize a structure for Smith-Purcell radiation at a single wavelength from ultrarelativistic electrons. The resulting design is highly resonant and emits narrowbandly. Experiments with a 3D-printed model for a wavelength of 900 μm show coherent enhancement. The versatility of inverse design offers a simple adaption of the structure to other electron energies or radiation wavelengths. This approach could advance beam-based THz generation for a wide range of applications.
dc.languageeng
dc.publisherAmerican Chemical Society (ACS)
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourcenlmid: 101634366
dc.sourceessn: 2330-4022
dc.titleInverse-Designed Narrowband THz Radiator for Ultrarelativistic Electrons.
dc.typeArticle
dc.date.updated2022-05-30T15:03:03Z
prism.endingPage1149
prism.issueIdentifier4
prism.publicationNameACS Photonics
prism.startingPage1143
prism.volume9
dc.identifier.doi10.17863/CAM.85021
rioxxterms.versionofrecord10.1021/acsphotonics.1c01932
rioxxterms.versionVoR
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.contributor.orcidHermann, Benedikt [0000-0001-9766-3270]
dc.contributor.orcidHaeusler, Urs [0000-0002-6818-0576]
dc.contributor.orcidIschebeck, Rasmus [0000-0002-5612-5828]
dc.identifier.eissn2330-4022
pubs.funder-project-idEuropean Research Council (884217)
cam.issuedOnline2022-03-16
cam.orpheus.success2022-11-11: Published version added to record


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivatives 4.0 International