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Focusing with planar microlenses made of two-dimensionally varying high contrast gratings
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dc.contributor.author | Klemm, A.B. | |
dc.contributor.author | Stellinga, D. | |
dc.contributor.author | Martins, E.R. | |
dc.contributor.author | Lewis, L. | |
dc.contributor.author | O'Faolain, L. | |
dc.contributor.author | Krauss, T.F. | |
dc.date.accessioned | 2014-12-23T10:01:05Z | |
dc.date.available | 2014-12-23T10:01:05Z | |
dc.date.issued | 2014-09-11 | |
dc.identifier | 159066237 | |
dc.identifier | 6575b217-48fd-498c-a7cd-a7c90b1ed87a | |
dc.identifier | 84911480322 | |
dc.identifier | 000342280900021 | |
dc.identifier.citation | Klemm , A B , Stellinga , D , Martins , E R , Lewis , L , O'Faolain , L & Krauss , T F 2014 , ' Focusing with planar microlenses made of two-dimensionally varying high contrast gratings ' , Optical Engineering , vol. 53 , no. 9 , 095104 . https://doi.org/10.1117/1.OE.53.9.095104 | en |
dc.identifier.issn | 0091-3286 | |
dc.identifier.uri | https://hdl.handle.net/10023/5954 | |
dc.description | The authors thank the European Union for the financial support through Marie Curie Action FP7-PEOPLE-2010-ITN Project No. 264687 “PROPHET”. | en |
dc.description.abstract | We report on the focusing performance of reflective two-dimensionally varying high contrast grating lenses based on silicon. The combination of their subwavelength nature and their high refractive index contrast makes it possible to create highly tolerant and planar microlenses. We used a rigorous mathematical code to design the lenses and verified their performance with finite element simulations. We also investigated the effects of grating thickness, angle, and wavelength of incidence in these simulations. Experimentally, we show the evolution of the beam profile along the optical axis for a lens with a high (0.37) numerical aperture. We have explored a wide range of numerical apertures (0.1-0.93) and show that the lenses behave as expected across the full range. Our analyses demonstrate the large design flexibility with which these lenses can be made along with ease of fabrication and potential for a number of applications in micro-optics. | |
dc.format.extent | 3827702 | |
dc.language.iso | eng | |
dc.relation.ispartof | Optical Engineering | en |
dc.subject | Diffractive optics | en |
dc.subject | Microlens | en |
dc.subject | Flat optics | en |
dc.subject | Photonic crystals | en |
dc.subject | High index contrast | en |
dc.subject | Numerical aperture | en |
dc.subject | QC Physics | en |
dc.subject.lcc | QC | en |
dc.title | Focusing with planar microlenses made of two-dimensionally varying high contrast gratings | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Commission | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Microphotonics and Photonic Crystals Group | en |
dc.identifier.doi | https://doi.org/10.1117/1.OE.53.9.095104 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | 264687 264687 264687 | en |
dc.identifier.grantnumber | EP/J01771X/1 | en |
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