Figure 5
(a) Diffusion coefficient of the QR-metadiffuser (blue) optimized at 2000 Hz (marker) and a reference QRD (red). (b) Diffusion coefficient of the PR-metadiffuser (blue) optimized at 2000 Hz (marker) and a reference PRD (red). (c) Corresponding absorption for the QRD case, where the grey lines shows the absorption of individual slits n = 1 and n = 5. For these slits, the insets show the complex frequency representation26 of the reflection coefficient (log|R(f r , f i )|2), where f r = Re(f) and f i = Im(f). (e) Corresponding absorption for the PRD where the complex frequency representation of the reflection coefficient is shown for the individual slit n = 1 in the inset.
