group velocity dispersion

Resolving features and derivatives in noisy data using weighted Whittaker–Henderson smoothing
B. Mulder, A. Lagendijk, and W. L. Vos
Meas. Sci. Technol. 37, 335002: 1-23 (2026)

Large dispersive effects near the band edges of photonic crystals
A. Imhof, W.L. Vos, R. Sprik, and A. Lagendijk
Phys. Rev. Lett. 83, 2942-2945 (1999)