Twisted Rainbow Light and Nature-Inspired Generation of Vector Vortex Beams

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dc.contributor.authorBouchal, Petrcs
dc.contributor.authorBouchal, Zdeněkcs
dc.coverage.issue7cs
dc.coverage.volume16cs
dc.date.issued2022-06-06cs
dc.description.abstractTwisted vector light beams (optical vortices) arise from a spiral modulation of the geometric (Pancharatnam-Berry) phase converting the light spin to the orbital angular momentum. The preferred geometric-phase elements using liquid crystals and plasmonic metasurfaces realize this conversion by structuring their building blocks, i.e., precisely orienting individual crystal molecules or plasmonic nanoantennas. Here, an analogous mechanism is discovered in the spiral phase modulation of light reflected by dielectric spheres and first demonstrated in natural phenomena, namely in the rainbow formation. The spiral geometric phase is documented by holographic imaging of full circle primary and secondary rainbows created in the laboratory. The measurement uses a wide-angle holographic camera (field of view approximate to 120 degrees) taking time-resolved self-correlation holograms (300 ms). The holograms allow a quantitative restoration of the spiral geometric phase of light reflected from thousands of randomly falling water drops. The capability of individual drops to generate vector vortex beams under circularly polarized illumination is proven theoretically and demonstrated in experiments using glass microspheres. The spherical reflectors are discovered as simple generators of vector vortex beams and vortex arrays, inspiring novel geometric-phase elements.en
dc.formattextcs
dc.format.extent1-10cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationLaser and Photonics Reviews. 2022, vol. 16, issue 7, p. 1-10.en
dc.identifier.doi10.1002/lpor.202200080cs
dc.identifier.issn1863-8899cs
dc.identifier.orcid0000-0002-6159-8099cs
dc.identifier.other178350cs
dc.identifier.researcheridG-8464-2014cs
dc.identifier.urihttp://hdl.handle.net/11012/208180
dc.language.isoencs
dc.publisherWiley-VCH GmbHcs
dc.relation.ispartofLaser and Photonics Reviewscs
dc.relation.urihttps://onlinelibrary.wiley.com/doi/10.1002/lpor.202200080cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1863-8899/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectgeometric phaseen
dc.subjectoptical vorticesen
dc.subjectphase imagingen
dc.subjectrainbowsen
dc.titleTwisted Rainbow Light and Nature-Inspired Generation of Vector Vortex Beamsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-178350en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:48:19en
sync.item.modts2025.01.17 16:33:00en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Experimentální biofotonikacs
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