Figure 4
Experimental demonstration of subcycle polarization manipulation of a THz waveform. The graph displays the measured transient electric field of a THz waveform after interaction with a time-dependent metamaterial (Figure 1a). After the leading part of the THz pulse has traversed an unexcited Si slab, the transient wire-grid polarizer is switched on, which permits the polarization of the trailing part to be changed from linear to elliptical. The units of Ex and Ey are the same. THz, terahertz.
