Dudley, Angela LMilione, GAlfano, RRForbes, A2014-08-082014-08-082014Dudley, A.L., Milione, G, Alfano, R.R and Forbes, A. 2014. All-digital wavefront sensing for structured light beams. Optics Express, vol. 22(11), pp 14031-140401094-4087http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-22-11-14031http://hdl.handle.net/10204/7567Copyright: 2014 Optical Society of America. This is an Open Access journal. The journal authorizes the publication of the information herewith contained. Published in Optics Express, vol. 22(11), pp 14031-14040We present a new all-digital technique to extract the wavefront of a structured light beam. Our method employs non-homogeneous polarization optics together with dynamic, digital holograms written to a spatial light modulator to measure the phase relationship between orthogonal polarization states in real-time, thereby accessing the wavefront information. Importantly, we show how this can be applied to measuring the wavefront of propagating light fields, over extended distances, without any moving components. We illustrate the versatility of the tool by measuring propagating optical vortices, Bessel, Airy and speckle fields. The comparison of the extracted and programmed wavefronts yields excellent agreement.enLaser beam characterizationWave-front sensingPhase measurementDigital holographyOptical vorticesArticleDudley, A. L., Milione, G., Alfano, R., & Forbes, A. (2014). All-digital wavefront sensing for structured light beams. http://hdl.handle.net/10204/7567Dudley, Angela L, G Milione, RR Alfano, and A Forbes "All-digital wavefront sensing for structured light beams." (2014) http://hdl.handle.net/10204/7567Dudley AL, Milione G, Alfano R, Forbes A. All-digital wavefront sensing for structured light beams. 2014; http://hdl.handle.net/10204/7567.TY - Article AU - Dudley, Angela L AU - Milione, G AU - Alfano, RR AU - Forbes, A AB - We present a new all-digital technique to extract the wavefront of a structured light beam. Our method employs non-homogeneous polarization optics together with dynamic, digital holograms written to a spatial light modulator to measure the phase relationship between orthogonal polarization states in real-time, thereby accessing the wavefront information. Importantly, we show how this can be applied to measuring the wavefront of propagating light fields, over extended distances, without any moving components. We illustrate the versatility of the tool by measuring propagating optical vortices, Bessel, Airy and speckle fields. The comparison of the extracted and programmed wavefronts yields excellent agreement. DA - 2014 DB - ResearchSpace DP - CSIR KW - Laser beam characterization KW - Wave-front sensing KW - Phase measurement KW - Digital holography KW - Optical vortices LK - https://researchspace.csir.co.za PY - 2014 SM - 1094-4087 T1 - All-digital wavefront sensing for structured light beams TI - All-digital wavefront sensing for structured light beams UR - http://hdl.handle.net/10204/7567 ER -