Supplementary Materials

Dielectric gradient metasurface optical elements

Dianmin Lin, Pengyu Fan, Erez Hasman, Mark L. Brongersma

Materials/Methods, Supplementary Text, Tables, Figures, and/or References

Download Supplement
  • Materials and Methods
  • Figs. S1 to S10
  • Legends for Movies S1 to S3
  • Full Reference List

Images, Video, and Other Other Media

Movie S1
Light steering with a DGMOE blazed grating. Diffraction pattern obtained from the grating shown in Fig. 3B of the main text upon illumination with 555 nm wavelength light. This supplementary video (Movie S1) shows the changes in the diffraction pattern upon changing the polarization state of the incidence beam successively from RCP - linear - LCP - linear - RCP, by manually rotating the fast axis of quarter waveplate QWP1 depicted in Fig. S6. over 360°, while fixing the transmission axis of linear polarizer (LP1 as noted in Fig. S6).
Movie S2
Measurement of the polarization state of the diffracted beams. Diffraction patterns obtained with an incident LCP beam at a wavelength light 555 nm. The circular polarizer that consists of a quarter waveplate (QWP2) and a linear polarizer (LP2) was added to characterize the polarization state of the diffracted beams. The fast axis of QWP2 is aligned with vertical axis, while the transmission axis of LP2 is manually rotated to alternatively transmit LCP and RCP beam. Movie S2 shows the changes in the diffraction pattern upon changing the circular polarizer from left-handed circular polarizer to right-handed circular polarizer alternatively, by manually rotating the transmission axis of linear polarizer (LP2) while fixing quarter waveplate (QWP2).
Movie S3
3D time evolution of wave-vectors of a Pancharatnam-Berry phase for the case of half waveplates as plotted in Fig. S7. (Bottom) the animations of the incident LCP waves (green); (Middle) the fast axes (blue) of eight half-waveplate elements that are equally spaced and have constant angle difference Δθ= π/8 between neighbors, and their orientation angles are one-to-one correspondence to the ones plotted in Fig. S8; (Top) the animations of the transmitted RCP waves behind the waveplate elements. The envelope of wavefronts of incident waves (green dash line) is flat, since the incident LCP waves are propagating at the same phase. The envelope of wavefronts of transmitted RCP waves behind the waveplate elements (red dash line) is tilted by λ along propagation z axis, due to the full 0-2π range PB phase pickup by the eight waveplate elements with fast-axes orientation varying between 0 and π.