Fraxicon for Optical Applications with Aperture ∼1 mm: Characterisation Study

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dc.contributor.authorMu, Haoran
dc.contributor.authorSmith, Daniel
dc.contributor.authorNg, Soon Hock
dc.contributor.authorAnand, Vijayakumar
dc.contributor.authorLe, Nguyen Hoai An
dc.contributor.authorDharmavarapu, Raghu
dc.contributor.authorKhajehsaeidimahabadi, Zahra
dc.contributor.authorRichardson, Rachael T.
dc.contributor.authorRuther, Patrick
dc.contributor.authorStoddart, Paul R.
dc.contributor.authorGricius, Henrikas
dc.contributor.authorBaravykas, Tomas
dc.contributor.authorGailevicius, Darius
dc.contributor.authorSeniutinas, Gediminas
dc.contributor.authorKatkus, Tomas
dc.contributor.authorJuodkazis, Saulius
dc.date.accessioned2024-04-04T13:09:45Z
dc.date.available2024-04-04T13:09:45Z
dc.date.issued2023
dc.description.abstractEmerging applications of optical technologies are driving the development of miniaturised light sources, which in turn require the fabrication of matching micro-optical elements with sub-1 mm cross-sections and high optical quality. This is particularly challenging for spatially constrained biomedical applications where reduced dimensionality is required, such as endoscopy, optogenetics, or optical implants. Planarisation of a lens by the Fresnel lens approach was adapted for a conical lens (axicon) and was made by direct femtosecond 780 nm/100 fs laser writing in the SZ2080™ polymer with a photo-initiator. Optical characterisation of the positive and negative fraxicons is presented. Numerical modelling of fraxicon optical performance under illumination by incoherent and spatially extended light sources is compared with the ideal case of plane-wave illumination. Considering the potential for rapid replication in soft polymers and resists, this approach holds great promise for the most demanding technological applications.
dc.identifier.urihttps://doi.org/10.3390/nano14030287
dc.identifier.urihttps://hdl.handle.net/10062/97778
dc.language.isoen
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/857627///CIPHR
dc.relation.ispartofseriesNanomaterials 2024, 14(3), 287
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Estoniaen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/ee/
dc.subjectfraxicon
dc.subjectmicro-optics
dc.subjectdirect laser writing
dc.subjectRGB
dc.subjectSZ2080™ resist
dc.titleFraxicon for Optical Applications with Aperture ∼1 mm: Characterisation Study
dc.typeinfo:eu-repo/semantics/articleen

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