Fig. 1. Schematic diagram of point positions within the L-type light-passing region

Fig. 2. Schematic diagram of optical path equivalence

Fig. 3. Schematic diagram of computational unit division

Fig. 4. Analysis model of light propagation channel. (a) Simplified model of light propagation channel; (b) optical path model

Fig. 5. Energy distribution diagram of the beam used in the study

Fig. 6. Meshing model of the fluid region

Fig. 7. Temperature distribution after 3 seconds of light propagation

Fig. 8. Density equivalent model calculation process diagram. (a) Initial density distribution; (b) density distribution after 3 seconds of light propagation; (c) density nodes of the original model; (d) density nodes of the equivalent mode

Fig. 9. Calculation time and results with different numbers of unidirectional micro-elements

Fig. 10. Computed beam phase difference distribution

Fig. 11. Beam wavefront aberration calculated by (a) the model and (b) the self-developed program

Fig. 12. Comparison of Zernike polynomials

Fig. 13. Schematic of L-type region

Fig. 14. Temperature distribution after 5 seconds

Fig. 15. Zernike coefficients from the 3rd to the 15th terms

Fig. 16. Variation of the main Zernike terms

Fig. 17. (a) Defocus and (b) spherical aberration changes over 5 seconds

Fig. 18. Gravitational force direction diagram

Fig. 19. Phase variation distribution under different

Fig. 20. Relationship between gravity component and phase difference