CustomSourceTime

CustomSourceTime (opens new window) uses a user-supplied envelope modulated by a carrier frequency.

Formula

Let $E(t)$ be the envelope stored in source_time_dataset. The source is:

$s(t) = A e^{i\phi} e^{-i2\pi f_0 t} E\left(t - \frac{\mathrm{offset}}{2\pi f_\mathrm{width}}\right)$

The envelope is interpolated to simulation time steps. It should be sampled finely enough to avoid interpolation artifacts and should start smoothly from zero.

Parameters

source_time_dataset: Dataset defining the custom envelope $E(t)$.

• Required field

freq0: Carrier frequency used to modulate the custom envelope.

• Unit: Hz
• Constraint: greater than 0
• Required field

fwidth: Estimated frequency width of the custom source.

• Unit: Hz
• Constraint: greater than 0
• Required field

offset: Time delay of the envelope in units of $1 / (2\pi f_\mathrm{width})$.

• Default: 0

amplitude: Real-valued maximum amplitude scaling factor.

• Default: 1

phase: Phase shift of the time dependence.

• Unit: rad
• Default: 0