11 Plasmonic Functionalities Based on Detuned Electrical Dipoles
421
(a)
(c)
(b)
Fig. 11.10 a Experimental leakage-radiation microscopy configuration used to detect radiation
diffracted by the DED array shown in Fig. 11.9a after the deposition of the PMMA phase-matching
layer. The lens L denotes a high-numerical-aperture objective (N.A. = 1.25). The back focal plane
F of the objective represents the location of a Fourier-transformed image of the radiation emerging
from the sample. b Images taken in the Fourier plane F with the sample being illuminated at different
wavelengths. The left and right spots correspond to the ±first diffraction orders with the (brightest)
zeroth diffraction order being blocked to enhance the contrast of images. c Wavelength dependencies
of the corresponding diffraction efficiencies, Γ, together with their ratio. Reprinted with permission
from Ref. [14]. ©2011 American Chemical Society
11.3.2 Metamaterial Wave Retarders in Reflection
Materials exhibiting linear birefringence are of crucial importance in modern optics,
providing necessary control of the polarization state of light. For example, uniaxial crystalline materials (e.g., quartz) are characterized with two different refractive
421
(a)
(c)
(b)
Fig. 11.10 a Experimental leakage-radiation microscopy configuration used to detect radiation
diffracted by the DED array shown in Fig. 11.9a after the deposition of the PMMA phase-matching
layer. The lens L denotes a high-numerical-aperture objective (N.A. = 1.25). The back focal plane
F of the objective represents the location of a Fourier-transformed image of the radiation emerging
from the sample. b Images taken in the Fourier plane F with the sample being illuminated at different
wavelengths. The left and right spots correspond to the ±first diffraction orders with the (brightest)
zeroth diffraction order being blocked to enhance the contrast of images. c Wavelength dependencies
of the corresponding diffraction efficiencies, Γ, together with their ratio. Reprinted with permission
from Ref. [14]. ©2011 American Chemical Society
11.3.2 Metamaterial Wave Retarders in Reflection
Materials exhibiting linear birefringence are of crucial importance in modern optics,
providing necessary control of the polarization state of light. For example, uniaxial crystalline materials (e.g., quartz) are characterized with two different refractive