Fig. 1. Schematic diagram of a coronagraph based on pupil phase modulation

Fig. 2. Schematic diagram of optimization area

Fig. 3. Schematic diagram of high contrast imaging coronagraph system based on SLM phase modulation

Fig. 4. Schematic diagram of Michelson interferometer system for verifying phase modulation mode

Fig. 5. Interference fringes when π phase is applied to the right half of the SLM

Fig. 6. Optimization process control flowchart

Fig. 7. Comparison of pre- and post-optimization tests for a single integral mirror telescope

Fig. 8. Optimization test of imaging contrast curve for a single overall mirror telescope

Fig. 9. Comparison of pre- and post-optimization tests for large aperture telescope with segmented mirrors

Fig. 10. Optimization and testing of imaging contrast curve for large aperture telescope with segmented mirrors

Fig. 11. Calibration and verification of focal plane imaging contrast