Understanding of Apodization time in profile monitor

I want to ensure the Apodization function used in the FDTD’s profile monitor. Is that a Gaussian function? Also, the Apodization time width we set in the monitor is the FWHM of this Gaussian function or just the gama factor in Gaussian function?

Yes, it is a Gaussian function and the width parameter specifies FWHM around the center time as shown on this figure:

You can read more about the apodization function on this KB page.

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