Experimental Verification of Nondiffracting X Waves

Jian Yu Lu, James F. Greenleaf

Research output: Contribution to journalArticle

213 Scopus citations

Abstract

The authors have embedded descriptions for localized nondiffracting waves such as Durnin’s wave in a generalized family of exact solutions to the isotropic/homogeneous wave equation. The first experimental production of acoustic forms of a subset of these solutions that the authors term, “X waves” are reported. Our generalized expression includes a term for the frequency response of the system and parameters for varying depth of field versus beam width of the resulting family of beams. Excellent agreement between theoretical predictions and experiment was obtained. An X wave of finite aperture driven with realizable (causal, finite energy) pulses travels with a large depth of field (nondiffracting length).

Original languageEnglish (US)
Pages (from-to)441-446
Number of pages6
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume39
Issue number3
DOIs
StatePublished - May 1992

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

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