High-fidelity phase and amplitude control of phase-only computer generated holograms using conjugate gradient minimisation
Date
15/05/2017Author
Grant ID
EP/L015110/1
RPG-2013-074
Metadata
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Abstract
We demonstrate simultaneous control of both the phase and amplitude of light using a conjugate gradient minimisation-based hologram calculation technique and a single phase-only spatial light modulator (SLM). A cost function, which incorporates the inner product of the light field with a chosen target field within a defined measure region, is efficiently minimised to create high fidelity patterns in the Fourier plane of the SLM. A fidelity of F = 0.999997 is achieved for a pattern resembling an LG01 mode with a calculated light-usage efficiency of 41.5%. Possible applications of our method in optical trapping and ultracold atoms are presented and we show uncorrected experimental realisation of our patterns with F = 0.97 and 7.8% light efficiency.
Citation
Bowman , D , Harte , T L , Chardonnet , V , De Groot , C , Denny , S J , Le Goc , G , Anderson , M , Ireland , P , Cassettari , D & Bruce , G D 2017 , ' High-fidelity phase and amplitude control of phase-only computer generated holograms using conjugate gradient minimisation ' , Optics Express , vol. 25 , no. 10 , pp. 11692-11700 . https://doi.org/10.1364/OE.25.011692
Publication
Optics Express
Status
Peer reviewed
ISSN
1094-4087Type
Journal article
Rights
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Description
Funding: Leverhulme Trust (RPG-2013-074); EPSRC (EP/G03673X/1; EP/L015110/1).Collections
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