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. 2015 Oct 6;6:8486. doi: 10.1038/ncomms9486

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The field distribution in the THz waveguide for (a) the non-relativistic design described in Fig. 4 with r_v=200 μm and d=270 μm, (b) the relativistic design in Fig. 5f for operation at 0.45 THz with r_v=105 μm and d=90 μm and (c) the relativistic design in Fig. 5f for operation at 1 THz with r_v=105 μm and d=30 μm.