tidy3d.BroadbandPulse

tidy3d.BroadbandPulse#

class BroadbandPulse[source]#

Bases: SourceTime

A source time injecting significant energy in the entire custom frequency range.

Parameters:

  • amplitude (NonNegativeFloat = 1.0) – Real-valued maximum amplitude of the time dependence.

  • phase (float = 0.0) – [units = rad]. Phase shift of the time dependence.

  • freq_range (tuple[float, float]) – [units = Hz]. Frequency range where the pulse should have significant energy.

  • minimum_amplitude (float = 0.3) – Minimum amplitude of the pulse relative to the peak amplitude in the frequency range.

  • offset (float = 0.0) – An automatic time delay of the peak value of the pulse has been applied under the hood to ensure smooth ramping up of the pulse at time = 0. This offfset is added on top of the automatic time delay in units of 1 / [2pi * (freq_range[1] - freq_range[0])].

Attributes

freq_range

minimum_amplitude

offset

amplitude

phase

Methods

amp_freq(freq)

Complex-valued source amplitude as a function of frequency.

amp_time(time)

Complex-valued source amplitude as a function of time.

end_time()

Time after which the source is effectively turned off / close to zero amplitude.

frequency_range([num_fwidth])

Delegated to frequency_range_sigma(sigma=num_fwidth) for computing the frequency range where the source amplitude is within exp(-num_fwidth**2/2) of the peak amplitude.

frequency_range_sigma([sigma])

Frequency range where the source amplitude is within exp(-sigma**2/2) of the peak amplitude.
freq_range#
minimum_amplitude#
offset#
end_time()[source]#

Time after which the source is effectively turned off / close to zero amplitude.

amp_time(time)[source]#

Complex-valued source amplitude as a function of time.

amp_freq(freq)[source]#

Complex-valued source amplitude as a function of frequency.

frequency_range_sigma(sigma=4.0)[source]#

Frequency range where the source amplitude is within exp(-sigma**2/2) of the peak amplitude.

frequency_range(num_fwidth=4.0)[source]#

Delegated to frequency_range_sigma(sigma=num_fwidth) for computing the frequency range where the source amplitude is within exp(-num_fwidth**2/2) of the peak amplitude.