Open Access

Figure 1.


Download original image

Reflection of light at various interfaces: (a) A semi-infinite PEC metal milled with subwavelength square holes behaves like an effective medium (λ ≫ d) with a resonant impedance (the hole width is a, the period is d, and the permittivity of hole filling medium is set as εh = 25); (b) A semi-infinite PEC metal milled with periodic slits (the slit width is a and the period is d) can induce the diffracted evanescent waves at the interface (λ ~ d); (c) Light reflection by a dielectric slab (with a thickness h) sandwiched between two semi-infinite media. The reflection efficiency and phase shift for the case (a)–(c) are shown in (d)–(f) respectively. We set in (d) and (e) a = d/2 and in (f), n1 = 1, n2 = 2, and n3 = 1.5.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.