Supplementary Figure 15: Phase drift and direction stability of fringes.
From: Molecular resolution imaging by repetitive optical selective exposure
(a) Phase drift of two fringes within 600 seconds, showing a 0.1 rad drift of fringe X and about 0.4 rad drift of fringe Y, respectively. (b and c) Direction stability of fringe X (b) and fringe Y (c), the direction was calculated as the angle to the x-axis, so the angle of fringe X is near 0 and the angle of fringe Y is near pi/2.
