Learning Forum

[IanFMZ]

Hi,

One way of obtaining the beam data for a source is by clicking "Visualize beam data" for the source, then exporting to various formats from the visualizer. We can also reach the visualizer by clicking Visualize -> Fields.

[Guilin Sun]

I am not sure how to do this in Python, but using Lumerical script you can do it. For example source_field=getresult("source","fields");
in the workspace you can see the dataset:
An even better way to do this is to use script add the Gaussian source, set its parameters and extract the field data as above.
eg addgaussian;
set("wavelength start",.5e-6);
set("wavelength stop",.6e-6);
set("waist radius w0",3e-6);
source_field=getresult("source","fields");
Then you can further process what you want to do.

[IanFMZ]

Thank you, that is exactly what I was looking for!
In Python, it can be done using
fdtd_hook = lumapi.FDTD fdtd_hook.getresult("source", "fields")
which will output the dataset as a dictionary with keys ['lambda', 'f', 'x', 'y', 'z', 'E', 'H', 'Lumerical_dataset'].

[Guilin Sun]

Thank you for letting me know this!