Structured light, powered by VCSEL light sources, is instrumental in numerous modern optical applications. Conventionally, optical systems rely on bulky configurations involving collimators and DOE devices, leading to increased weight and volume. Here, we proposed and designed an a-Si based multifunctional metasurface for structured light at 940 nm. By co-optimizing both phase and amplitude, we create a multifunctional metasurface, which offers a compact and lightweight alternative to conventional structured light systems. When combined with a VCSEL, we achieve structured light functionality with a working efficiency of 72.5% at 940 nm, accompanied by a wide field of view spanning 42.5 degrees. Initial findings from our design demonstrate significant performance improvements compared to conventional devices, highlighting its potential for widespread adoption across various domains.
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