The European Physical Journal Special Topics

, Volume 199, Issue 1, pp 159–166 | Cite as

Efficient generation of Bessel beam arrays by means of an SLM

  • R. Bowman
  • N. Muller
  • X. Zambrana-Puyalto
  • O. Jedrkiewicz
  • P. Di Trapani
  • M. J. Padgett
Regular Article

Abstract

We use a Spatial Light Modulator (SLM) to produce arrays of Bessel beams by using multiple axicon phase-masks on the SLM. This approach utilises the whole of the SLM, rather than just a thin annular region (which is the case if the SLM is in the far-field of the generated Bessel beams). Using the whole SLM rather than just an annular region means that the required intensity on the SLM is an order of magnitude lower for a given power in the Bessel beams. Spreading the power over the whole SLM is important for high-power applications such as laser micromachining. We allow the axicons to overlap and interfere in the hologram, so the axial length of the Bessel beam core is maintained as we add more beams to the array.

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Copyright information

© EDP Sciences and Springer 2011

Authors and Affiliations

  • R. Bowman
    • 1
  • N. Muller
    • 2
  • X. Zambrana-Puyalto
    • 3
  • O. Jedrkiewicz
    • 4
  • P. Di Trapani
    • 4
  • M. J. Padgett
    • 1
  1. 1.School of Physics & Astronomy, SUPAUniversity of GlasgowGlasgowScotlandUK
  2. 2.Department of PhysicsUniversity of FriburgFriburgSwitzerland
  3. 3.QISS and Department of Physics & AstronomyMacquarie UniversitySydneyAustralia
  4. 4.CNISM and Università degli Studi dell’InsubriaComoItaly

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