Ultraviolet Beam Focusing in Gallium Arsenide by Direct Excitation of Surface Plasmon Polaritons

<div>Normalized transmission spectra in the far field at different collection angles for (a) the bulls’ eye GaAs structure and (b) the reference aperture-only GaAs structure.</div>

Journal of Nanomaterials

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Figure 2

Figure 2: Ultraviolet Beam Focusing in Gallium Arsenide by Direct Excitation of Surface Plasmon Polaritons 