Work

On-chip electrically reconfigurable diffractive element and metalens with phase change material

Year: 2026

Type: article

Abstract: Realizing compact, reconfigurable on-chip meta-atoms capable of dynamically controlling the phase and amplitude of integrated photonic fields remains a fundamental challenge. Here, we demonstrate a reconfigurable on-chip diffractive element and corresponding metalens based on the phase change material Sb2S3, enabling dynamic modulation of the optical field. Initially, a reconfigurable on-chip diffractive unit was designed by harnessing the intrinsic characteristics of the phase change material. Subsequently, an on-chip metalens was constructed from an array of these units, and state-of-the-art micro- and nanofabrication techniques were employed to realize the device. Finally, performance evaluations confirmed the metalens's reconfigurability. This provides a platform for on-chip reconfigurable photonics, with potential applications in photonic computing, optical storage, and advanced spectroscopy.

Source: Applied Physics Letters

DOI: 10.1063/5.0303243

Authors: Chongqiang Wang, Xiaoyuan Lv, Tianyang Zhao, Siqi Feng, Qiang He, Xiang-Shui Miao

Institutions: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Funder: National Natural Science Foundation of China

Awards: G3578084377, G6772030483, G7054682671