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The generation of Bessel beams at millimetre-wave frequencies by use of an axicon.

Research output: Contribution to journalJournal article


Journal publication date11/1999
JournalOptics Communications
Journal number4-6
Number of pages3
Original languageEnglish


An axicon is used to generate a Bessel beam at 90 GHz in the millimetre-wave region of the spectrum. The Bessel beam has a central intensity maximum of approximately 4 mm in diameter that is maintained over a propagation distance greater than 60 mm. (C) 1999 Elsevier Science B.V. All rights reserved.