Fig. 3: Time-resolved PEEM (TR-PEEM) measurements of dielectric waveguide modes. | Nature Communications

Fig. 3: Time-resolved PEEM (TR-PEEM) measurements of dielectric waveguide modes.

From: Revealing low-loss dielectric near-field modes of hexagonal boron nitride by photoemission electron microscopy

Fig. 3

a Spatiotemporal evolution of waveguide modes measured with TR-PEEM. b Illustration of TR-PEEM measurement. c Crosscut lines from (a) along the red dashed line, indicating wave packet moving with time delay. The dashed pink line in (c) is the visual guide line. d Center of the observed wave packet varies with time delay, the red line is the linear fitting.

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