Jinghua Teng

Sep 5, 2024 | nature.com | Hong liu |Dong Zhao |Jodhbir S Mehta |Jinghua Teng |Fangwen Sun

AbstractHigh-order diffraction (HOD) from optical microstructures is undesirable in many applications because of the accompanying ghosting patterns and loss of efficiency. In contrast to suppressing HOD with subwavelength structures that challenge the fabrication of large-scale devices, managing HOD is less developed due to the lack of an efficient method for independently manipulating HOD.

Sep 20, 2023 | nature.com | Dong Zhao |Hong liu |Jinghua Teng |Cheng-Wei Qiu

AbstractPlanar diffractive lenses (PDLs) with optimized but disordered structures can focus light beyond the diffraction limit. However, these disordered structures have inevitably destroyed wide-field imaging capability, limiting their applications in microscopy. Here, we introduce information entropy S to evaluate the disorder of an objective chip by using the probability of its structural deviation from standard Fresnel zone plates.