Abstract

Superoscillations are oscillations of a band limited waveform with a local frequency higher than the bandlimit. Spatial superoscillations show great potential for performing super-resolution imaging. However, these superoscillatory waveforms are inevitably surrounded by high intensity sidelobes which severely limit the usable super-resolved area of an image. In this study, we demonstrate how polarization engineering can be used in some circumstances to suppress superoscillation sidelobes, taking advantage of the transverse wave nature of light. We illustrate the principle by a model super-resolution imaging system that can image Rayleigh scatterers with separations smaller than the classic Rayleigh criterion.

© 2023 Optica Publishing Group

Construction of arbitrary vortex and superoscillatory fields

Matt K. Smith and Gregory J. Gbur
Opt. Lett. 41(21) 4979-4982 (2016)

Optimising superoscillatory spots for far-field super-resolution imaging

Katrine S. Rogers, Konstantinos N. Bourdakos, Guang Hui Yuan, Sumeet Mahajan, and Edward T. F. Rogers
Opt. Express 26(7) 8095-8112 (2018)

Simplified superoscillatory lenses for super-resolution imaging

Rui Qi and Gregory J. Gbur
J. Opt. Soc. Am. A 39(12) C116-C125 (2022)

Sub-Rayleigh dark-field imaging via speckle illumination

Ling-Yu Dou, De-Zhong Cao, Lu Gao, and Xin-Bing Song
Opt. Lett. 48(6) 1347-1350 (2023)

Keyframe-aided resolution enhancement network for dynamic super-resolution structured illumination microscopy

Yujun Tang, Gang Wen, Yong Liang, LinBo Wang, Jie Zhang, and Hui Li
Opt. Lett. 48(11) 2949-2952 (2023)