Flowchart illustrating the computational workflow of the beam prediction function used in the holographic analysis. The propagation matrices K_M2→IF, K_IF→M1 and K_M1→_Beam are precomputed and loaded into the memory of the selected device to accelerate the beam calculation. Reflector surface errors are incorporated through phase-correction factors applied on the M2 and M1 fields. ${V^{\prime }}_{\text{M2}}$ and ${V^{\prime }}_{\text{M1}}$ denote the fields on M2 and M1 after applying the phase correction factors C_M1(ϵ_M1) and C_M2(ϵ_M2), which are the reflector surface deviations ϵ_M1 and ϵ_M2, respectively.