Matches in SemOpenAlex for { <https://semopenalex.org/work/W2156339512> ?p ?o ?g. }
Showing items 1 to 60 of
60
with 100 items per page.
- W2156339512 abstract "Smith-Purcell radiation is the emission of electromagnetic radiation by an electron beam passing next to an optical grating. Recent measurement of relatively intense power of such radiation was observed in the THz-regime [1]. To explain the high intensity and the super-linear dependence on current beyond the threshold it was suggested that the radiating device operated in the high gain regime, amplifying spontaneous emission (ASE)[1,2]. We contest this interpretation and suggest an alternative mechanism. According to our interpretation the device operates as a distributed feedback (DFB) laser oscillator, in which a forward going surface wave, excited by the beam on the grating surface, is coupled to a backward going surface wave by a second order Bragg reflection process. This feedback process produces a saturated oscillator. Another plausible mechanism for explaining the experiment [3,4] is Backward Wave Oscillation (BWO) with a surface wave, accompanied by second harmonic bunching of the e-beam at saturation, and consequent coherent (superradiant) Smith-Purcell radiation. We present analytical models for the two proposed mechanisms, and compare them. The models predict different emission frequencies and angles. The first model matches better the experimental findings." @default.
- W2156339512 created "2016-06-24" @default.
- W2156339512 creator A5022266866 @default.
- W2156339512 creator A5074140943 @default.
- W2156339512 creator A5078021876 @default.
- W2156339512 date "2005-01-01" @default.
- W2156339512 modified "2023-09-26" @default.
- W2156339512 title "DISTRIBUTED FEEDBACK SURFACE-WAVE SMITH-PURCELL FEL" @default.
- W2156339512 cites W423563551 @default.
- W2156339512 hasPublicationYear "2005" @default.
- W2156339512 type Work @default.
- W2156339512 sameAs 2156339512 @default.
- W2156339512 citedByCount "0" @default.
- W2156339512 crossrefType "journal-article" @default.
- W2156339512 hasAuthorship W2156339512A5022266866 @default.
- W2156339512 hasAuthorship W2156339512A5074140943 @default.
- W2156339512 hasAuthorship W2156339512A5078021876 @default.
- W2156339512 hasConcept C120665830 @default.
- W2156339512 hasConcept C121332964 @default.
- W2156339512 hasConcept C153385146 @default.
- W2156339512 hasConcept C168834538 @default.
- W2156339512 hasConcept C2777813233 @default.
- W2156339512 hasConcept C2778439541 @default.
- W2156339512 hasConcept C54355233 @default.
- W2156339512 hasConcept C86803240 @default.
- W2156339512 hasConceptScore W2156339512C120665830 @default.
- W2156339512 hasConceptScore W2156339512C121332964 @default.
- W2156339512 hasConceptScore W2156339512C153385146 @default.
- W2156339512 hasConceptScore W2156339512C168834538 @default.
- W2156339512 hasConceptScore W2156339512C2777813233 @default.
- W2156339512 hasConceptScore W2156339512C2778439541 @default.
- W2156339512 hasConceptScore W2156339512C54355233 @default.
- W2156339512 hasConceptScore W2156339512C86803240 @default.
- W2156339512 hasLocation W21563395121 @default.
- W2156339512 hasOpenAccess W2156339512 @default.
- W2156339512 hasPrimaryLocation W21563395121 @default.
- W2156339512 hasRelatedWork W11060677 @default.
- W2156339512 hasRelatedWork W1539731719 @default.
- W2156339512 hasRelatedWork W1892846675 @default.
- W2156339512 hasRelatedWork W1977552609 @default.
- W2156339512 hasRelatedWork W1979689779 @default.
- W2156339512 hasRelatedWork W1995687985 @default.
- W2156339512 hasRelatedWork W2003397865 @default.
- W2156339512 hasRelatedWork W2012771652 @default.
- W2156339512 hasRelatedWork W2019763874 @default.
- W2156339512 hasRelatedWork W2033361946 @default.
- W2156339512 hasRelatedWork W2039944447 @default.
- W2156339512 hasRelatedWork W2059179861 @default.
- W2156339512 hasRelatedWork W2061362173 @default.
- W2156339512 hasRelatedWork W2062561416 @default.
- W2156339512 hasRelatedWork W2094369964 @default.
- W2156339512 hasRelatedWork W2095946908 @default.
- W2156339512 hasRelatedWork W71906467 @default.
- W2156339512 hasRelatedWork W1969979693 @default.
- W2156339512 hasRelatedWork W2184163265 @default.
- W2156339512 hasRelatedWork W2502893987 @default.
- W2156339512 isParatext "false" @default.
- W2156339512 isRetracted "false" @default.
- W2156339512 magId "2156339512" @default.
- W2156339512 workType "article" @default.