Fig. 1. Simulation sample

Fig. 2. Initial spectral distribution

Fig. 3. Multi-wavelength high-order harmonics reconstruction results. (a) Comparison of amplitude reconstruction; (b) comparison of phase reconstruction; (c) MSE in case of priori sample and without updating; (d) comparison of phase reconstruction in case of simultaneous reconstruction of sample and probe

Fig. 4. Reconstruction results of multi-wavelength high-order harmonics with complex wavefront. (a) Initial spectral distribution; (b) comparison of amplitude reconstruction; (c) comparison of phase reconstruction; (d) MSE during iterative process

Fig. 5. Amplitude reconstruction for each order. (a) 27.6 nm; (b) 31.5 nm; (c) 34.6 nm; (d) 38.1 nm

Fig. 6. Amplitude and phase reconstruction comparison for 34.6 nm harmonic with different sample contrasts. (a) Amplitude reconstruction with sample contrast of 1; (b) amplitude reconstruction with sample contrast of 0.14; (c) amplitude reconstruction with sample contrast of 0.19; (d) amplitude reconstruction with sample contrast of 0.28; (e) phase reconstruction for each order with sample contrast of 0.28

Fig. 7. Influence of sample contrast with 5×5 scan matrix. (a) Amplitude reconstruction for each order with sample contrast of 1; (b) phase reconstruction for each order with sample contrast of 1; (c) amplitude reconstruction for each order with sample contrast of 0.19; (d) phase reconstruction for each order with sample contrast of 0.19