A technique that blends micro- and nanometre-scale printed elements has been used to sculpture white light into a spatial array of coloured twisted beams, demonstrating sophisticated photonic control even with common incoherent sources of light.
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Forbes, A., Perumal, L. Twisted light gets a splash of colour. Nat. Nanotechnol. 18, 221–222 (2023). https://doi.org/10.1038/s41565-023-01322-5
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DOI: https://doi.org/10.1038/s41565-023-01322-5
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Arbitrary engineering of spatial caustics with 3D-printed metasurfaces
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