Fig. 6: Resolution enhancement capability of waveguide holography.
The top row and bottom row illustrate experimentally captured output wavefronts using a tilted plane wave as a target, which forms a single image point at an infinite distance, without and with our method, respectively. In the top row, the target tilted plane wave is used as the input wavefront for the waveguide, without the knowledge of the waveguide model. In the bottom row, the output wavefront is optimized to form the target tilted plane wave using our model. The carrier frequency is removed to visualize phase discontinuities by dividing with the target wavefront phase. On the right, the PSFs and MTFs are obtained from the measured wavefronts. In the PSF plots, a single pixel corresponds to 0.53 arcmin. The axis of MTF plot is in cycles per degree (cpd).
