Fig. 1. Concept diagram of GAN

Fig. 2. Visualization of output phase-geometric dimension array

Fig. 3. Impact of different batch values on parameters. (a) PSNR; (b) SSIM

Fig. 4. Comparisons and proportion statistics of the results by different algorithms. (a) Original phase distribution; (b) output phase distribution obtained by SR-GAN algorithm; (c) output phase distribution obtained by interpolation algorithm; (d) proportions of errors for SR-GAN and interpolation algorithms; (e) visual analysis of error for SR-GAN algorithm; (f) visual analysis of error for interpolation algorithm

Fig. 5. Comparisons and proportion statistics of complex phase distribution by different algorithms. (a) Real data; (b) phase distribution obtained by SR-GAN algorithm; (c) phase distribution obtained by interpolation algorithm; (d)‒(f) errors of three groups data by SR-GAN and interpolation algorithms

Fig. 6. Variation in MSE values for two kinds of arrays with iterations. (a) 60 pixel × 60 pixel array; (b) 120 pixel × 120 pixel array

Fig. 7. Energy distributions of the metalens in the x-z plane based on different data. (a) Based on real simulation large array; (b) based on SR-GAN large array