Biomedical Engineering Reference
In-Depth Information
Figure 8.8
Dipole radiation into the type II hyperbolic metamaterial.
(a) Electric field intensity distribution inside a 10 period thick Ag/TiO
2
multilayer structure generated by a classical electric dipole shown as
the orange arrow. (b) Optical powerflow from the dipole source through
the metamaterial. (c) A magnified view of the region in (b) inside the
orange rectangle. In (b) and (c), the Poynting vector streamlines (white)
indicatethelocaldirectionofthepowerflow,andthebackgroundcolormap
showsthetime-averagedPoyntingvectorintensitydistribution.Theorange
arrows in (c) highlight the global powerflow direction. In all the panels, the
excitation wavelength is 650 nm.
Figure 8.9
Dipole radiation into the multilayer stack outside of the
hyperbolicregime.(a)Electricfieldintensitydistributioninsidea10period
thick Ag/TiO
2
multilayer structure generated by a classical electric dipole
shown as the orange arrow. (b) Optical powerflow from the dipole source
through the multilayer. (c) A magnified view of the region in (b) inside
the orange rectangle. In (b) and (c), the time-averaged Poynting vector
streamlines (white) indicate the local direction of the powerflow, and the
backgroundcolormapshowsthePoyntingvectorintensitydistribution.The
orange arrows in (c) highlight the global powerflow direction. In all the
panels, the excitation wavelength is 500 nm.
