Efficient generation of Bessel beam arrays by means of an SLM

Bowman, R., Muller, N., Zambrana-Puyalto, X., Jedrkiewicz, O., Trapani, P. and Padgett, M. (2011) Efficient generation of Bessel beam arrays by means of an SLM. European Physical Journal: Special Topics, 199(1), pp. 159-166. (doi:10.1140/epjst/e2011-01511-3)

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Publisher's URL: http://dx.doi.org/10.1140/epjst/e2011-01511-3

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.

Item Type:Articles
Additional Information:From the issue entitled "STELLA: Experiments with Lasers and Laser Applications"
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Bowman, Mr Richard and Padgett, Professor Miles
Authors: Bowman, R., Muller, N., Zambrana-Puyalto, X., Jedrkiewicz, O., Trapani, P., and Padgett, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal: Special Topics
Publisher:Springer
ISSN:1951-6355
ISSN (Online):1951-6401
Published Online:07 December 2011

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
566181Optical Tweezers at Long Range and High Pressure (Creativity @ Home)Miles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/I034726/1Physics and Astronomy