Dudley, Angela LMilione, GAlfano, RRForbes, A2015-05-252015-05-252014-09-25Dudley A.L., Milioneb G, Alfanob RR, and Forbesa A." Wavefront sensing with all-digital Stokes measurements ", Proc. SPIE 9194, Laser Beam Shaping XV, 91940C (September 25, 2014); doi: http://dx.doi.org/10.1117/12.2060568http://spie.org/Publications/Proceedings/Paper/10.1117/12.2060568http://hdl.handle.net/10204/7968Proceedings of SPIE 9194, Laser Beam Shaping XV, 91940C. 25 September 2014.A long-standing question in optics has been to efficiently measure the phase (or wavefront) of an optical field. This has led to numerous publications and commercial devices such as phase shift interferometry, wavefront reconstruction via modal decomposition and Shack-Hartmann wavefront sensors. In this work we develop a new technique to extract the phase which in contrast to previously mentioned methods is based on polarization (or Stokes) measurements. We outline a simple, all-digital approach using only a spatial light modulator and a polarization grating to exploit the amplitude and phase relationship between the orthogonal states of polarization to determine the phase of an optical field. We implement this technique to reconstruct the phase of static and propagating optical vortices.enPhase singularitiesPolarizationSpatial light modulatorsStokes measurementsWavefrontConference PresentationDudley, A. L., Milione, G., Alfano, R., & Forbes, A. (2014). Wavefront sensing with all-digital Stokes measurements. SPIE. http://hdl.handle.net/10204/7968Dudley, Angela L, G Milione, RR Alfano, and A Forbes. "Wavefront sensing with all-digital Stokes measurements." (2014): http://hdl.handle.net/10204/7968Dudley AL, Milione G, Alfano R, Forbes A, Wavefront sensing with all-digital Stokes measurements; SPIE; 2014. http://hdl.handle.net/10204/7968 .TY - Conference Presentation AU - Dudley, Angela L AU - Milione, G AU - Alfano, RR AU - Forbes, A AB - A long-standing question in optics has been to efficiently measure the phase (or wavefront) of an optical field. This has led to numerous publications and commercial devices such as phase shift interferometry, wavefront reconstruction via modal decomposition and Shack-Hartmann wavefront sensors. In this work we develop a new technique to extract the phase which in contrast to previously mentioned methods is based on polarization (or Stokes) measurements. We outline a simple, all-digital approach using only a spatial light modulator and a polarization grating to exploit the amplitude and phase relationship between the orthogonal states of polarization to determine the phase of an optical field. We implement this technique to reconstruct the phase of static and propagating optical vortices. DA - 2014-09-25 DB - ResearchSpace DP - CSIR KW - Phase singularities KW - Polarization KW - Spatial light modulators KW - Stokes measurements KW - Wavefront LK - https://researchspace.csir.co.za PY - 2014 T1 - Wavefront sensing with all-digital Stokes measurements TI - Wavefront sensing with all-digital Stokes measurements UR - http://hdl.handle.net/10204/7968 ER -