There are few materials that are broadly used for fabricating optical metasurfaces for visible light applications. Gallium phosphide (GaP) is a material that, due to its optical properties, has the potential to become a primary choice but due to the difficulties in fabrication, GaP thin films deposited on transparent substrates have never been exploited. In this article we report the design, fabrication, and characterization of three different amorphous GaP metasurfaces obtained through sputtering. Although the material properties can be further optimized, our results show the potential of this material for visible applications making it a viable alternative in the material selection for optical metasurfaces.

很少有材料被广泛用于制造可见光应用的光学超表面。磷化镓（GaP）是一种材料，由于其光学特性而有可能成为首选，但由于制造困难，从未开发过沉积在透明基板上的GaP薄膜。在本文中，我们报告了通过溅射获得的三种不同的非晶GaP超表面的设计，制造和表征。尽管可以进一步优化材料的性能，但我们的结果表明，这种材料在可见光应用中具有潜力，使其成为光学超表面材料选择的可行替代方案。