How do I set a UniformCurrentSource source?

Date	Category
2023-12-08 12:07:52	Sources

The tidy3d.UniformCurrentSource is a rectangular volume source with uniform time dependence. The example below illustrates how to define a tidy3d.UniformCurrentSource within a simulation.

# Source bandwidth.
pulse = tidy3d.GaussianPulse(freq0=200e12, fwidth=20e12)

# Source definition
source = tidy3d.UniformCurrentSource(
  center=(1,2,3),
  size=(0,2,1),
  source_time=pulse,
  polarization='Ex',
  interpolate=True,
  name="uniform_source",
)

Use the center and size parameters to set the source position and volume, then adjust the source_time dependence using tidy3d.GaussianPulse. The source polarization defines the direction and type of the current component. Finally, the parameter interpolate handles reverse interpolation of zero-size dimensions of the source. If False, the source data is snapped to the nearest Yee grid point. If True, equivalent source data is applied on the surrounding Yee grid points to emulate placement at the specified location using linear interpolation. Note that making size=(0, 0, 0) is equivalent to including a tidy3d.PointDipole source.