Fig. 1. Principle optical path diagram of backlight imaging using spherically bent crystal

Fig. 2. Schematic diagram of spherically bent crystal imaging system for Shenguang laser facilities

Fig. 3. Spatial resolution and magnification of spherically bent crystal imaging system

Fig. 4. Imaging measurement results based on spherically bent crystal in Shenguang laser facilities. (a) Measurement result of hydrodynamic instability experiment; (b) measurement result of implosion compression trajectory

Fig. 5. Optimized imaging parameters of spherically bent crystal imaging system for implosion trajectory measurement

Fig. 6. Simulation results comparison of spherically bent crystal imaging system with different imaging parameters. (a) Imaging sample; (b) simulation result of conventional equal resolution design by using backlight with diameter of 200 μm; (c) simulation result of one-dimensional optimization design by using backlight with diameter of 200 μm; (d) simulation result of one-dimensional optimization design by using backlight with diameter of 400 μm

Fig. 7. Comparison of pellet imaging simulation results obtained by spherically bent crystal imaging system. (a) Simulation result of pellet imaging by using backlight with diameter of 200 μm; (b) simulation result of pellet imaging by using backlight with diameter of 400 μm

Fig. 8. Transmittance curve of pellet absorption image along diameter direction

Fig. 9. Trajectory measurement result obtained by optimized spherically bent crystal imaging system