Hi gneplyakh,

I’m not sure I understand the problem completely, but I’d suggest scripting with the ZOSAPI. The Physical Optics Propagation (POP) analysis is fully built-into the ZOSAPI (the Paraxial Gaussian Beam isn’t, it can still be called with the ZOSAPI but it might be a hassle to adjust the settings).

Here’s a code snippet that shows how to set the X/Y Waist for POP in the ZOSAPI with Python:

# Open a POP analysis
MyPOP = TheSystem.Analyses.New_Analysis(ZOSAPI.Analysis.AnalysisIDM.PhysicalOpticsPropagation)

# Retrieve the POP analysis settings
MyPOPSettings = MyPOP.GetSettings()

# ======= This part only serves to dislpay parameters and can be omitted in the final code ======= #
# Initialize parameter counter
ii = 0

# Retrieve first parameter name
parameter = MyPOPSettings.GetParameterName(ii)

# Print parameters until first empty parameter name occurence
while parameter != "":
    # Display parameter number and name
    print("Parameter number: {0} | Parameter name: {1}".format(ii, parameter))

    # Increase parameter counter
    ii += 1

    # Read next parameter name
    parameter = MyPOPSettings.GetParameterName(ii)

# ================================================================================================ #

# Parameter numbers of X/Y Waist
X_Waist_Set = 0
Y_Waist_Set = 1

# New X/Y Waist
X_Waist = 1.23
Y_Waist = 4.56

# Adjust beam X/Y Waist
MyPOPSettings.SetParameterValue(X_Waist_Set, X_Waist)
MyPOPSettings.SetParameterValue(Y_Waist_Set, Y_Waist)

# Apply settings and run POP
MyPOP.ApplyAndWaitForCompletion()

# This is the part where you get whatever result is relevant to you
# MyPOP.GetResults()

# Close the POP analysis
MyPOP.Close()

While most settings of POP can be read from the Syntax Help File, some parameters are hidden behind parameter numbers. This is the purpose of the (settings) methods: GetParameterName, GetParameterValue, and SetParameterValue. I’ve added a small piece of code that shows the parameters available and their corresponding numbers. You don’t need that piece of code in the end, but here’s what it shows:

Parameter number: 0 | Parameter name: Waist X
Parameter number: 1 | Parameter name: Waist Y
Parameter number: 2 | Parameter name: Decenter X
Parameter number: 3 | Parameter name: Decenter Y
Parameter number: 4 | Parameter name: Aperture X
Parameter number: 5 | Parameter name: Aperture Y
Parameter number: 6 | Parameter name: Order X
Parameter number: 7 | Parameter name: Order Y

So when you call the SetParameterValue with paramIdx as 0/1 you are setting the beam X/Y Waist respectively.

Let me know if that makes sense or if you need further explanation.

Take care,

David