[15p-PA1-1~22] 3.11 Nanoscale optical science and near-field optics

[15p-PA1-22] Investigation of Coma Aberration Correction in Metalenses

〇(B)Yuuki Karita¹, Yoshiaki Nishijima^2,3 (1.College of Engineering Science, Yokohama National Univ., 2.Faculty of Engineering, Yokohama National Univ., 3.PRESTO-JST)

Keywords:

metalens

Metalenses that shape wavefronts using subwavelength structures are effective flat and ultrathin optical elements for reducing the size and weight of optical systems. However, similar to refractive lenses, metalenses are also subject to aberrations, and under wide field-of-view conditions, coma aberration becomes a major factor limiting their performance. In conventional refractive optics, aberration correction is achieved by combining multiple lenses. In this study, we demonstrate the potential for aberration reduction under wide field-of-view conditions by employing phase synthesis equivalent to a multi-lens system.