Full metadata record
DC Field | Value | Language |
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dc.citation.startPage | 40034 | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Hur, Min Sup | - |
dc.contributor.author | Ersfeld, B | - |
dc.contributor.author | Noble, A | - |
dc.contributor.author | Suk, H | - |
dc.contributor.author | Jaroszynki, DA | - |
dc.date.accessioned | 2023-12-21T22:44:35Z | - |
dc.date.available | 2023-12-21T22:44:35Z | - |
dc.date.created | 2017-01-16 | - |
dc.date.issued | 2017-01 | - |
dc.description.abstract | Ultra-intense, narrow-bandwidth, electromagnetic pulses have become important tools for exploring the characteristics of matter. Modern tuneable high-power light sources, such as free-electron lasers and vacuum tubes, rely on bunching of relativistic or near-relativistic electrons in vacuum. Here we present a fundamentally different method for producing narrow-bandwidth radiation from a broad spectral bandwidth current source, which takes advantage of the inflated radiation impedance close to cut-off in a medium with a plasma-like permittivity. We find that by embedding a current source in this cut-off region, more than an order of magnitude enhancement of the radiation intensity is obtained compared with emission directly into free space. The method suggests a simple and general way to flexibly use broadband current sources to produce broad or narrow bandwidth pulses. As an example, we demonstrate, using particle-in-cell simulations, enhanced monochromatic emission of terahertz radiation using a two-colour pumped current source enclosed by a tapered waveguide. | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.7, pp.40034 | - |
dc.identifier.doi | 10.1038/srep40034 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.scopusid | 2-s2.0-85009126798 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/21147 | - |
dc.identifier.url | http://www.nature.com/articles/srep40034 | - |
dc.identifier.wosid | 000391552300001 | - |
dc.language | 영어 | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | Increased impedance near cut-off in plasma-like media leading to emission of high-power, narrow-bandwidth radiation | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | OPTICAL RECTIFICATION | - |
dc.subject.keywordPlus | LASER | - |
dc.subject.keywordPlus | GENERATION | - |
dc.subject.keywordPlus | OSCILLATIONS | - |
dc.subject.keywordPlus | GAS | - |
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