<p>This paper presents a design method for holograms capable of implementing acoustic holography in multilayer systems. The proposed method involves constructing an arbitrary multilayer barrier within the acoustic medium and applying phase modulation using the angular spectrum approach. To assess the performance of the designed hologram, an arbitrary complex image was selected, and its accuracy in the target plane was evaluated through simulations using both the iterative angular spectrum approach and the finite element method. Additionally, various conditions were explored, including adjustments to the number of barriers. The results show that the reconstructed image aligned closely with the target under the specified design parameters, and the pressure field was more accurate than those obtained with improper phase settings. Furthermore, the reconstructed pressure field exhibited consistent stability even when the number of barriers was varied.</p>

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Design of acoustic hologram for multi-layer system transmission with phase modulations

  • Jeonghyun Shin,
  • Kyungjun Song

摘要

This paper presents a design method for holograms capable of implementing acoustic holography in multilayer systems. The proposed method involves constructing an arbitrary multilayer barrier within the acoustic medium and applying phase modulation using the angular spectrum approach. To assess the performance of the designed hologram, an arbitrary complex image was selected, and its accuracy in the target plane was evaluated through simulations using both the iterative angular spectrum approach and the finite element method. Additionally, various conditions were explored, including adjustments to the number of barriers. The results show that the reconstructed image aligned closely with the target under the specified design parameters, and the pressure field was more accurate than those obtained with improper phase settings. Furthermore, the reconstructed pressure field exhibited consistent stability even when the number of barriers was varied.