Fig. 1. Wavefront reconstruction based on Southwell model

Fig. 2. Schematics of wavefront reconstruction. (a) Differential phase; (b) differential phase derivative deviation evaluation map; (c) partial evaluation map; (d) wavefront reconstruction integral queue; (e) wavefront reconstruction integral; (f) wavefront reconstruction result

Fig. 3. Flowchart of path-guided wavefront reconstruction algorithm

Fig. 4. Theoretical simulation. (a) Theoretical wavefront of incident light field; (b) interferogram detected by CCD

Fig. 5. Theoretical simulation. (a) Gaussian noise; (b) interferogram detected by CCD

Fig. 6. Simulation results of the zonal method without integral-path guidance and the integral-path-guided reconstruction method in noisy environment. (a)-(e) Wavefront reconstruction of the zonal method without integral-path guidance; (f)-(j) integral-path-guided wavefront reconstruction

Fig. 7. RMS of the residuals between the integral-path-guided reconstruction results and the theoretical wavefront, as well as RMS of the residuals between the zonal wavefront reconstruction results without integral-path guidance and the theoretical wavefront

Fig. 8. Influence of k value on wavefront reconstruction residual

Fig. 9. Schematic of the experimental optical path

Fig. 10. Experimental device

Fig. 11. Theoretical phase loaded by SLM

Fig. 12. Interferogram acquired by CCD and derivative deviation evaluation diagrams of the differential phase in orthogonal direction. (a) Quadri-wave lateral shearing interferogram acquired by CCD; (b) derivative deviation evaluation diagram of the differential phase in the x direction; (c) derivative deviation evaluation diagram of the differential phase in the y direction.

Fig. 13. Wavefront reconstruction results. (a) Zonal wavefront reconstruction without integral-path guidance; (b) integral-path-guided wavefront reconstruction