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Figure 2 | Nanoscale Research Letters

Figure 2

From: Plasmonic lens focused longitudinal field excitation for tip-enhanced Raman spectroscopy

Figure 2

Calculated LEF intensity distributions of the PL under linearly polarized (x-axis) beam illumination. With two different wavelengths of 632.8 (a, c) and 532 nm (b, d). Panels (a) and (b) represent the LEF intensity distributions in the xz plane (y = 0), and panels (c) and (d) in the xy plane (z = 0). Intensity cross-section (e) along the x-axis in the central region of the PL (which is denoted by the white dashed lines in panels (c) and (d).

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