Cross-Correlation and Afterpulsing: Two Detectors, One Truth

The crude fix: simply exclude the earliest ACF channels from the fit. Quick, costs nothing, and fine when you don't care about the fastest dynamics, but you've thrown away exactly the short-delay information that small particles need.
The elegant fix: cross-correlation . Split the scattered light across two matched detectors and correlate one against the other instead of a detector against itself.

The artifact at short delay times, the two-detector cure, and an honest word about 2D vs 3D.

Mobile-First Module · ~10 minutes · Pass mark: 4 / 5