In this paper, the generation of twisted pulses carrying orbital angular momentum is discussed. Such pulses are generated by polychromatic superposition of higher-order Bessel beams. The non-negligible effect of the wavenumber frequency-dispersion on the pulse propagation at millimeter waves is taken into account. Large operating bandwidths are required to synthesize spatially confined electromagnetic pulses. For this reason, a wideband Bessel-beam launcher is proposed, implementing an inward cylindrical traveling-wave aperture distribution with an azimuthal phase variation. Preliminary results clearly show the possibility of successful generation of twisted electromagnetic pulses at millimeter waves.

Generation of limited-diffractive twisted pulses at millimeter waves / Pavone, Santi C.; Comite, Davide; Fuscaldo, Walter; Valerio, Guido; Galli, Alessandro; Ettorre, Mauro; Albani, Matteo. - (2017), pp. 3511-3514. (Intervento presentato al convegno 11th European Conference on Antennas and Propagation, EUCAP 2017 tenutosi a Paris; France) [10.23919/EuCAP.2017.7928311].

Generation of limited-diffractive twisted pulses at millimeter waves

Comite, Davide;Fuscaldo, Walter;Galli, Alessandro;ETTORRE, MAURO;
2017

Abstract

In this paper, the generation of twisted pulses carrying orbital angular momentum is discussed. Such pulses are generated by polychromatic superposition of higher-order Bessel beams. The non-negligible effect of the wavenumber frequency-dispersion on the pulse propagation at millimeter waves is taken into account. Large operating bandwidths are required to synthesize spatially confined electromagnetic pulses. For this reason, a wideband Bessel-beam launcher is proposed, implementing an inward cylindrical traveling-wave aperture distribution with an azimuthal phase variation. Preliminary results clearly show the possibility of successful generation of twisted electromagnetic pulses at millimeter waves.
2017
11th European Conference on Antennas and Propagation, EUCAP 2017
electromagnetic pulses; higher-order Bessel beams; Near-field focusing; orbital angular momentum (OAM);
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Generation of limited-diffractive twisted pulses at millimeter waves / Pavone, Santi C.; Comite, Davide; Fuscaldo, Walter; Valerio, Guido; Galli, Alessandro; Ettorre, Mauro; Albani, Matteo. - (2017), pp. 3511-3514. (Intervento presentato al convegno 11th European Conference on Antennas and Propagation, EUCAP 2017 tenutosi a Paris; France) [10.23919/EuCAP.2017.7928311].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1189069
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