Near-field characterization of Bragg mirrors engraved in surface plasmon waveguides
نویسندگان
چکیده
Surface plasmon waveguides (SPW’s) are metal ridges featuring widths in the micrometre range and thicknesses of a few tens of nanometres. A focused ion beam (FIB) has been used to carve micro–scatterers into gold SPW’s and the near–field distributions around these micro-structures are observed by means of a Photon Scanning Tunneling Microscope (PSTM). On the basis of near-field images, we show that a finite length periodic arrangement of
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