Practical algorithm for custom-made caustic beams

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We present a practical algorithm for designing an aperture field (source) that propagates along a predefined generic beam trajectory that consists of both convex and concave sections. We employ here the mechanism that forms the well-known Airy beam in which the beam trajectory follows a smooth convex caustic of the geometric optics rays and generalize it for a class of beams that are referred to as “caustic beams” (CBs). The implementation is based on “back-tracing” rays from the predefined beam trajectory to the source’s aperture to form its phase distribution. The amplitude is set in order to form a uniform smooth amplitude of the CBs along their trajectories. Several numerical examples are included.

Original languageEnglish
Pages (from-to)2499-2502
Number of pages4
JournalOptics Letters
Issue number13
StatePublished - 1 Jul 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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