What are the advantages of ZEMAX's POP compared to CodeV's BSP beam propagation and FFT(BRP) beam propagation?
According to technical documents, POP decomposes the incident beam into plane waves. Does this lose part of the information?
Comparing OpticsStudio and CodeV, I think POP and FFT beam propagation are very similar. Do you know BSP?
Under what conditions should I choose?
POP vs. BSP vs. BRP
Best answer by Ray
Code V sequential raytracing implements some FFT / diffraction as in Zemax (FFT MTF, Huygens). I don't think Code V has anything really similar to POP which is closer to what you would encounter is e.g. VirtualLab. On the other hand, Code V BSP uses Gausslets, it is similar to techniques found in ASAP and FRED, but not available in Zemax.
Approximately, BSP is best at:
- speed & memory
- large incidence angles (but locally low divergence)
- large smooth objects
and POP is best at:
- complicated apertures and obscurations
- profiles with higher irregular gradients (lens arrays, diffusers)
A few years back, POP could do multimode beams but BSP could not (it's more a software limit that a fundamental limit, they could add it).
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