3D beam reconstruction by fluorescence imaging

Radwell, N., Boukhet, M. A. and Franke-Arnold, S. (2013) 3D beam reconstruction by fluorescence imaging. Optics Express, 21(19), pp. 22215-22220. (doi: 10.1364/OE.21.022215)

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Publisher's URL: http://dx.doi.org/10.1364/OE.21.022215


We present a technique for mapping the complete 3D spatial intensity profile of a laser beam from its fluorescence in an atomic vapour. We propagate shaped light through a rubidium vapour cell and record the resonant scattering from the side. From a single measurement we obtain a camera limited resolution of 200 × 200 transverse points and 659 longitudinal points. In constrast to invasive methods in which the camera is placed in the beam path, our method is capable of measuring patterns formed by counterpropagating laser beams. It has high resolution in all 3 dimensions, is fast and can be completely automated. The technique has applications in areas which require complex beam shapes, such as optical tweezers, atom trapping and pattern formation.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Radwell, Dr Neal and Franke-Arnold, Professor Sonja
Authors: Radwell, N., Boukhet, M. A., and Franke-Arnold, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America

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