Multi-wavelength holography with a single spatial light modulator for ultracold atom experiments
Abstract
We demonstrate a method to independently and arbitrarily tailor the spatial profile of light of multiple wavelengths and we show possible applications to ultracold atoms experiments. A single spatial light modulator is programmed to create a pattern containing multiple spatially separated structures in the Fourier plane when illuminated with a single wavelength. When the modulator is illuminated with overlapped laser beams of different wavelengths, the position of the structures is wavelength-dependent. Hence, by designing their separations appropriately, a desired overlap of different structures at different wavelengths is obtained. We employ regional phase calculation algorithms and demonstrate several possible experimental scenarios by generating light patterns with 670 nm, 780 nm and 1064 nm laser light which are accurate to the level of a few percent. This technique is easily integrated into cold atom experiments, requiring little optical access.
Citation
Bowman , D , Ireland , P , Bruce , G D & Cassettari , D 2015 , ' Multi-wavelength holography with a single spatial light modulator for ultracold atom experiments ' , Optics Express , vol. 23 , no. 7 , pp. 8365-8372 . https://doi.org/10.1364/OE.23.008365
Publication
Optics Express
Status
Peer reviewed
ISSN
1094-4087Type
Journal article
Description
The authors acknowledge funding from the Leverhulme Trust Research Project Grant RPG-2013-074 and from the EPSRC grant GR/T08272/01.Collections
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