Tailored Acoustic Holograms with Phased Arrays

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Abstract

Advances in phased array of transducers (PATs) allow for precise control of each element's phase and amplitude and can consist of hundreds of transducers. The widely adopted Gerchberg-Saxton type of algorithms do not provide sufficient accuracy for complex control tasks like formation of detailed holograms as they perform well only for a small number of control points with respect to the number of transducers. Here we present an efficient PATs amplitude and phase solver based on the iterative first-order gradient optimization of the user defined loss function (APGO). We demonstrate high resolution hologram reconstruction when the number of control points is 25 times the number of transducers.
Original languageEnglish
Title of host publication2022 IEEE International Ultrasonics Symposium (IUS)
Number of pages3
PublisherIEEE
Publication date2022
ISBN (Print)978-1-6654-7813-7
ISBN (Electronic)978-1-6654-6657-8
DOIs
Publication statusPublished - 2022
MoE publication typeA4 Article in conference proceedings
Event2022 IEEE International Ultrasonics Symposium (IUS) - Venice, Italy
Duration: 10 Oct 202213 Oct 2022

Fields of Science

  • 114 Physical sciences
  • Ultrasonics
  • ultrasound
  • HOLOGRAMS
  • 113 Computer and information sciences
  • Optimisation

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