Figure 1 | Light: Science & Applications

Figure 1

From: Direct imaging of the near field and dynamics of surface plasmon resonance on gold nanostructures using photoemission electron microscopy

Figure 1

(a) SEM image of an Au nanorod (95 nm×180 nm×40 nm) array on Nb-doped TiO2. (b) A sketch map of the irradiation setup for the PEEM measurements. PEEM images of the same array excited using (c) a mercury lamp and (d) p-polarized NIR femtosecond laser pulses in which hot spots can be observed at four corners of each rod. A dashed line rectangle in (c) and (d) indicates the outline of an Au nanorod. The light was irradiated from the left side at an incident angle of 74°. The wave vector in the plane of the sample surface k// is indicated, and for the p-polarized beam used, the polarization in the plane of the sample surface E// is parallel to k//. NIR, near-infrared; PEEM, photoemission electron microscopy; SEM, scanning electron microscopy.

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