Extended Data Fig. 1: DMD momentum probes.

a–g, Measured DMD probe transmission cavity field and their phase profile line cuts. The values of \({k}_{\perp }/{k}_{r}\) in panels a–f are \([0,2.1,4.2,6.3,8.5,10.6]\times {10}^{-3}\), respectively. The white dashed line in panel a shows the length of the cuts in panel g. Additional features around the main probe field are due to imperfections of the confocal cavity and stray light from the DMD probe beam. The grey area is the half plane that contains the mirror image of the probe field, and we do not show this redundant portion of the image in the main text figures.