Phase zonal reconstruction via differential metasurface

Phase reconstruction has a wide range of application in the field of optical measurement. A phase zonal reconstruction method using differential metasurface is proposed, where bias images in horizontal and vertical directions are captured to extract phase gradients for zonal reconstruction. This approach enables simultaneous edge detection and phase reconstruction while leveraging the unique advantages of metasurface, including their compactness, high customization potential, and ease of integration into miniaturized optical systems. Furthermore, the phase zonal reconstruction approach effectively enhances the resolution and quality of phase information measurement. Both theoretical and experimental results demonstrate that this method delivers exceptional performance, offering a promising solution for optical measurements that require efficient integration into existing systems. It also paves the way for advanced detection in manufacturing, quality control, and materials science.