Conclusion
The experiment fully demonstrated the capability of the DMD to diffractively correct wavefront aberrations. It successfully induced a focus aberration, correcting for off-axis astigmatism, and compensated for higher order aberrations on the DMD surface. We discovered that the DMD is not quite flat, which has significant consequences for wavefront quality. Also, we showed that the blaze condition can be used to significantly increase the diffraction efficiency.
There are important topics for continued research in both experiment and theory. Experimentally, the corrected wavefront could be measured using an interferometer and iteratively corrected. In terms of theory, a rigorous calculation to determine relative diffraction efficiencies and the diffraction limited spot size could be used for comparison with the experimental results.