Superoscillatory quartz lens with effective numerical aperture greater than one

Yuan, G.H., Lin, Y-H., Tsai, D.P. and Zheludev, N.I. (2020) Superoscillatory quartz lens with effective numerical aperture greater than one. Applied Physics Letters, 117 (2), [021106]. (doi:10.1063/5.0013823).

Record type: Article

Abstract

We report super-resolution high-numerical-aperture and long-working-distance superoscillatory quartz lenses for focusing and imaging applications. At the wavelength of λ = 633 nm, the lenses have an effective numerical aperture of 1.25, a working distance of 200 μm, and a focus into a hotspot of 0.4λ. Confocal imaging with resolution determined by the superoscillatory hotspot size is experimentally demonstrated.

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APL20-AR-04356 - Accepted Manuscript

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Superoscillatory quartz lens with numerical aperture May 20 - Accepted Manuscript

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Accepted/In Press date: 15 May 2020

e-pub ahead of print date: 16 July 2020

Additional Information: Funding Information: This work was supported by the Singapore Ministry of Education (Grant No. MOE2016-T3-1-006), the Agency for Science, Technology, and Research (A*STAR) Singapore (Grant No. SERC A1685b0005), and the Engineering and Physical Sciences Research Council UK (Grant Nos. EP/N00762X/1 and EP/ M009122/1). Publisher Copyright: © 2020 Author(s).

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