A high-speed, wavelength invariant, single-pixel wavefront sensor with a digital micromirror device

Cox, M. A., Toninelli, E., Cheng, L., Padgett, M. J. and Forbes, A. (2019) A high-speed, wavelength invariant, single-pixel wavefront sensor with a digital micromirror device. IEEE Access, 7, pp. 85860-85866. (doi: 10.1109/ACCESS.2019.2925972)

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Abstract

The wavefront measurement of a light beam is a complex task, which often requires a series of spatially resolved intensity measurements. For instance, a detector array may be used to measure the local phase gradient in the transverse plane of the unknown laser beam. In most cases, the resolution of the reconstructed wavefront is determined by the resolution of the detector, which in the infrared case is severely limited. In this paper, we employ a digital micro-mirror device (DMD) and a single-pixel detector (i.e., with no spatial resolution) to demonstrate the reconstruction of unknown wavefronts with excellent resolution. Our approach exploits modal decomposition of the incoming field by the DMD, enabling wavefront measurements at 4 kHz of both visible and infrared laser beams.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Toninelli, Ermes and Padgett, Professor Miles
Authors: Cox, M. A., Toninelli, E., Cheng, L., Padgett, M. J., and Forbes, A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:IEEE Access
Publisher:IEEE
ISSN:2169-3536
ISSN (Online):2169-3536
Published Online:01 July 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in IEEE Access 7: 85860-85866
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
190828EPSRC Centre for Doctoral Training in Sensing and MeasurementAndrew HarveyEngineering and Physical Sciences Research Council (EPSRC)EP/L016753/1P&S - Physics & Astronomy
190841UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1P&S - Physics & Astronomy
169636Twists and more: the complex shape of lightMiles PadgettEuropean Research Council (ERC)340507P&S - Physics & Astronomy