Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1537132 | Optics Communications | 2011 | 6 Pages |
Abstract
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. We 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Thomas Godin, Andrew Forbes, Darryl Naidoo, Michael Fromager, Emmanuel Cagniot, Kamel Aït-Ameur,