6533b829fe1ef96bd128ae09

RESEARCH PRODUCT

Exact reconstruction of thz sub-λ source features in knife-edge measurements

Alessia PasquaziMarco PecciantiRoberto MorandottiSze Phing HoLucia CaspaniTsuneyuki OzakiJalil AliMatteo ClericiA. C. BusaccaFabrizio Buccheri

subject

PhysicsCouplingPhase-sensitive field characterizationBlade (geometry)Terahertz radiationbusiness.industrySettore ING-INF/02 - Campi ElettromagneticiEdge (geometry)Lambdasubwavelength sourceSettore ING-INF/01 - ElettronicaSource fieldAtomic and Molecular Physics and OpticsOpticsSampling (signal processing)subwavelength sourcesspatiotemporal field characterizationElectrical and Electronic EngineeringTime-resolved spectroscopybusinessterahertz (THz) sources

description

The spatial features of a sub-wavelength terahertz source are not accessible using time-integrated knife-edge techniques due to the non-separable space-time nature of the radiated field and to systematic modifications induced by the blade itself. We show that combining knife-edge with a time resolved electro-optical sampling, the space-time coupling can be addressed and the source field profile can be exactly reconstructed.

yearjournalcountryeditionlanguage
2013-02-01
https://eprints.gla.ac.uk/111921/1/111921.pdf