A Design Scheme for Arbitrary 3-D Caustic Beam Field Patterns

Timor Melamed, Gabriel Lasry, Yaniv Brick

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


An algorithm for designing an aperture field that radiates caustic (Airy-beam type) beams along a predefined 3-D beam trajectory in free-space, with arbitrary curvature and torsion is presented. The predefined beam-axis trajectory sets the aperture field's phase to form a smooth caustic surface. The aperture amplitude distribution is constructed to manipulate both the on-axis intensity profile and the off-axis beam-width, via an iterative procedure. Once the aperture distribution is calculated, the radiation from a finite sampled aperture is computed numerically using a fast numerical technique. The algorithm is demonstrated for the case of helical trajectory beam.
Original languageEnglish
Title of host publicationURSI General Assembly, Rome, Italy
Number of pages4
StatePublished - Sep 2020
EventURSI Gass 2020 - Rome, Italy
Duration: 29 Aug 20205 Sep 2020


ConferenceURSI Gass 2020


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