Bessel-Gauss beams have mainly been proposed in optics as a solution for reducing the on-axis intensity oscillations typical of Bessel beams. Previous investigations on Bessel-Gauss beams are based on a scalar theory in the paraxial approximation, and thus cannot be extended to the microwave range where a fully vectorial approach is needed. Here, the generation of Bessel-Gauss beams through leaky waves is investigated. First, the nondiffractive and focusing properties of Bessel-Gauss beams generated through leaky waves are extensively examined in the frame of a vectorial approach. Useful design criteria are derived to optimize both the radiation and the focusing efficiency of such beams. On this basis, leaky-wave radiators synthesized to support the generation of a Bessel-Gauss beam over a given frequency band in the microwave range are presented. Full-wave results corroborate the concept.

Fuscaldo, W., Benedetti, A., Comite, D., Baccarelli, P., Burghignoli, P., Galli, A. (2020). Bessel-gauss beams through leaky waves: Focusing and diffractive properties. PHYSICAL REVIEW APPLIED, 13(6) [10.1103/PhysRevApplied.13.064040].

Bessel-gauss beams through leaky waves: Focusing and diffractive properties

Baccarelli P.;
2020

Abstract

Bessel-Gauss beams have mainly been proposed in optics as a solution for reducing the on-axis intensity oscillations typical of Bessel beams. Previous investigations on Bessel-Gauss beams are based on a scalar theory in the paraxial approximation, and thus cannot be extended to the microwave range where a fully vectorial approach is needed. Here, the generation of Bessel-Gauss beams through leaky waves is investigated. First, the nondiffractive and focusing properties of Bessel-Gauss beams generated through leaky waves are extensively examined in the frame of a vectorial approach. Useful design criteria are derived to optimize both the radiation and the focusing efficiency of such beams. On this basis, leaky-wave radiators synthesized to support the generation of a Bessel-Gauss beam over a given frequency band in the microwave range are presented. Full-wave results corroborate the concept.
Fuscaldo, W., Benedetti, A., Comite, D., Baccarelli, P., Burghignoli, P., Galli, A. (2020). Bessel-gauss beams through leaky waves: Focusing and diffractive properties. PHYSICAL REVIEW APPLIED, 13(6) [10.1103/PhysRevApplied.13.064040].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/376569
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 7
social impact