University of Hertfordshire

From the same journal

Unstable Bessel beam resonator

Research output: Contribution to journalArticlepeer-review

  • C. L. Tsangaris
  • G. H. C. New
  • J. Rogel-Salazar
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Original languageEnglish
Pages (from-to)233-238
Number of pages6
JournalOptics Communications
Publication statusPublished - 1 Aug 2003


We examine the properties of a Bessel–Gauss resonator design studied previously, and explain the bell-shaped modulation imposed on its lowest-order mode in terms of an equivalent linear cavity. We propose an unstable cavity to eliminate this effect, and obtain modes whose intensities resemble a true Bessel function along the diameter of the defining aperture of the resonator.

ID: 633048