Godin, TForbes, ANaidoo, DarrylFromager, MCagniot, EAït-Ameur, K2011-10-212011-10-212011-06Godin, T, Forbes, A, Naidoo, D et al. 2011. Transverse correlation vanishing due to phase aberrations. Optics Communications, Vol 284, pp 4601-46060030-4018http://www.sciencedirect.com/science/article/pii/S0030401811006286http://hdl.handle.net/10204/5254This is the author’s version of a work that was accepted for publication in Optics Communications. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Optics Communications, Vol 284(23), pp 4601-4606The concept of transverse correlation vanishing, between the fraction of power contained in the centre and wings of a probe beam, recently introduced [Opt. Commun. 282 (2009) 3854–3858] is important to be considered when measuring the effective focal length of any refractive index profile. When the latter is not parabolic it is shown that the transverse correlation could vanish, and this represents a potential source of error when measuring any lensing effect. The authors propose a low cost set-up (two photodiodes, a pinhole and a stop) able to reveal if the probe beam has monitored a pure or an aberrated lensing effect especially when it is time-dependent.enDiffractionPhase aberrationLensing effectBeam divergenceTransverse correlationOpticsArticleGodin, T., Forbes, A., Naidoo, D., Fromager, M., Cagniot, E., & Aït-Ameur, K. (2011). Transverse correlation vanishing due to phase aberrations. http://hdl.handle.net/10204/5254Godin, T, A Forbes, Darryl Naidoo, M Fromager, E Cagniot, and K Aït-Ameur "Transverse correlation vanishing due to phase aberrations." (2011) http://hdl.handle.net/10204/5254Godin T, Forbes A, Naidoo D, Fromager M, Cagniot E, Aït-Ameur K. Transverse correlation vanishing due to phase aberrations. 2011; http://hdl.handle.net/10204/5254.TY - Article AU - Godin, T AU - Forbes, A AU - Naidoo, Darryl AU - Fromager, M AU - Cagniot, E AU - Aït-Ameur, K AB - The concept of transverse correlation vanishing, between the fraction of power contained in the centre and wings of a probe beam, recently introduced [Opt. Commun. 282 (2009) 3854–3858] is important to be considered when measuring the effective focal length of any refractive index profile. When the latter is not parabolic it is shown that the transverse correlation could vanish, and this represents a potential source of error when measuring any lensing effect. The authors propose a low cost set-up (two photodiodes, a pinhole and a stop) able to reveal if the probe beam has monitored a pure or an aberrated lensing effect especially when it is time-dependent. DA - 2011-06 DB - ResearchSpace DP - CSIR KW - Diffraction KW - Phase aberration KW - Lensing effect KW - Beam divergence KW - Transverse correlation KW - Optics LK - https://researchspace.csir.co.za PY - 2011 SM - 0030-4018 T1 - Transverse correlation vanishing due to phase aberrations TI - Transverse correlation vanishing due to phase aberrations UR - http://hdl.handle.net/10204/5254 ER -