Journal
OPTICS EXPRESS
Volume 19, Issue 20, Pages 18871-18884Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.018871
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Funding
- UK Engineering and Physical Sciences Research Council
- University of St Andrews
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We present a powerful approach towards full understanding of laser light propagation through multimode optical fibres and control of the light at the fibre output. Transmission of light within a multimode fibre introduces randomization of laser beam amplitude, phase and polarization. We discuss the importance of each of these factors and introduce an experimental geometry allowing full analysis of the light transmission through the multimode fibre and subsequent beam-shaping using a single spatial light modulator. We show that using this approach one can generate an arbitrary output optical field within the accessible field of view and range of spatial frequencies given by fibre core diameter and numerical aperture, respectively, that contains over 80% of the total available power. We also show that this technology has applications in biophotonics. As an example, we demonstrate the manipulation of colloidal microparticles. (C) 2011 Optical Society of America
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