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(Color online) (a) Schematic of the dipole antenna with the SRR and (b)–(d) micrographs of the samples.
(Color online) Amplitude spectra of the samples from (a) experiments and (b) simulations. Solid and dashed lines indicate x- and y-polarization components, respectively. The spectra are normalized by the peak values of each sample. (c) Schematic of the FDTD simulation model. The electrodes are defined as perfect conductors on substrates with refractive index n = 3.52. The electric field was excited in the excitation area in (c). The radiated electric field was calculated at a point 1000 μm from the antenna.
(Color online) (a) Amplitude, (b) ellipticity, and (c) polarization angle spectra with (red curves) and without (blue curves) the switching pulse. Solid and dashed lines in (a) indicate x- and y-polarized electric fields, respectively. The inset shows a schematic of the pump and switching pulses.
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