Multiscale Bessel beams generated by a tunable acoustic gradient index of refraction lens

Euan McLeod, Adam B. Hopkins, Craig B. Arnold

Research output: Contribution to journalArticle

62 Scopus citations

Abstract

A beam that resembles a Bessel beam on two scales is generated using a tunable acoustic gradient index of refraction (TAG) lens. The minor scale of the TAG-generated Bessel beam is nondiffracting and self-healing. The major scale of the beam diffracts while still forming a Bessel pattern due to the specific geometry of the TAG lens. The acoustic and optical theory behind the TAG lens is outlined, and the experimental beam itself is presented. The major and minor rings are explained, and the TAG beam is compared with both axicongenerated and conventionally focused Gaussian beams.

Original languageEnglish (US)
Pages (from-to)3155-3157
Number of pages3
JournalOptics Letters
Volume31
Issue number21
DOIs
StatePublished - Nov 1 2006

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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