Priscilla, NikenLi, NeutonWesemann, LukasSulejman, ShabanMeng, JiajunAko, Rajour TanyiBhaskaran, MadhuSukhorukov, Andrey A.Roberts, Ann2025-05-232025-05-2397815106705010277-786Xhttp://www.scopus.com/inward/record.url?scp=85210266761&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733752519Metasurfaces with angular sensitivity have been shown to provide a platform for developing an ultra-compact phase imaging system. Their performance, however, is often limited to a narrow range of spatial frequencies. Here, we apply inverse design to design and fabricate a metasurface an asymmetric optical transfer function across a numerical aperture (NA) of 0.6. The engineered response of this device enables phase imaging of microscopic transparent objects.This research was conducted by the Australian Research Council Centre of Excellence/ARC Special Research Centre/ARC Key Centre for Transformative Meta-Optical Systems (project number CE200100010) and funded by the Australian Government. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).enPublisher Copyright: © 2024 SPIE. All rights reserved.dielectricMetasurfacePhase imagingtopological optimization202410.1117/12.300084185210266761