Research / 2019 / Article / Fig 4

Research Article

Quantitative Surface Plasmon Interferometry via Upconversion Photoluminescence Mapping

Figure 4

Interference fringes supported on Au patterns with various orientations. (a) Schematic illustration for the interference between SPPs and RWP on a rotated Au square with an azimuthal angle of . (b, c) Experimentally observed (b) and theoretically simulated (c) interference fringes supported on a () μm2 Au square with different rotation angles. (d, e) Experimentally observed (d) and simulated (e) interference fringes on a rotated Au triangle (edge length: 50 μm). .