Comparative analysis of wavefront aberrations between plano-convex lenses and metalenses

Chan-Wook Baik; Jungho Moon; Jang Hwan Tae; Kyoungjin Park; Jaeduck Jang; Jaekwan Kim; Byonggwon Song; JeongYub Lee; Heejin Choi; Wonshik Choi; Hyuck Choo; Seokho Yun

doi:10.1117/12.3027543

2 October 2024 Comparative analysis of wavefront aberrations between plano-convex lenses and metalenses

Chan-Wook Baik, Jungho Moon, Jang Hwan Tae, Kyoungjin Park, Jaeduck Jang, Jaekwan Kim, Byonggwon Song, JeongYub Lee, Heejin Choi, Wonshik Choi, Hyuck Choo, Seokho Yun

Author Affiliations +

Proceedings Volume 13109, Metamaterials, Metadevices, and Metasystems 2024; 131090K (2024) https://doi.org/10.1117/12.3027543
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

Over the past decade, sub-wavelength diffractive optics has emerged as a promising field of research, offering attractive optical characteristics that allow for the manipulation of the amplitude and phase of incident light on flat surfaces. In particular, metalenses have shown strong potential to replace bulk refractive optical elements with ultra-thin planar platforms. In this study, we present a comparative analysis of wavefront aberration between sub-wavelength, nano-sized dielectric metalenses and commercial plano-convex (PCX) lenses at an infrared (IR) wavelength of 1,550 nm. We developed an off-axis interferometry system to observe the point-spread function (PSF) at the focal plane from phase-resolved interference patterns. The phase distribution across the wavefront was observed and calculated using Zernike polynomials. Additionally, we measured the focal spot size, modulation-transfer function (MTF), and Strehl ratio. Through this analysis, we found that the metalenses demonstrate diffraction-limited characteristics and are strongly competitive or even superior to the commercial PCX lenses in most metrics under the designed monochromatic wavelength.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chan-Wook Baik, Jungho Moon, Jang Hwan Tae, Kyoungjin Park, Jaeduck Jang, Jaekwan Kim, Byonggwon Song, JeongYub Lee, Heejin Choi, Wonshik Choi, Hyuck Choo, and Seokho Yun "Comparative analysis of wavefront aberrations between plano-convex lenses and metalenses", Proc. SPIE 13109, Metamaterials, Metadevices, and Metasystems 2024, 131090K (2 October 2024); https://doi.org/10.1117/12.3027543

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