Experimental study demonstrates functional visible transmissive metasurface optics using Ge23Sb7S70 chalcogenide glass, indicating a promising platform for ultrathin visible photonic devices.
The development of innovative dielectric materials is crucial for advancing metasurface optics. Chalcogenides are well‐known for their unique optical properties and broadband high transmission from visible to infrared, which promises to be an emerging material platform for metasurface optics. However, the lack of chalcogenide materials in visible transmissive metasurfaces remains. In this work, the designs and experimental works of the first chalcogenide visible transmissive metasurface optics based on the chalcogenide material Ge 23 Sb 7 S 70 (GSS) platform are presented. Taking advantage of its high refractive index and low optical loss in visible, chalcogenide metalens, focused meta‐vortex, meta‐holographic devices, and computational visible spectrometers are designed and fabricated with a commendable performance. This work establishes the groundwork for realizing diverse functionalities and broader integration of chalcogenide metasurfaces at visible wavelengths.
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Dai et al. (2025) studied this question.
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