Figure 10
Illustration of real-time processing for phase plate alignment. (a) An example of what can be seen live during the measurement. The root mean square of 1D horizontal lineouts of the aspheric phase are used to obtain a measure of the aberrations in the horizontal direction, which in this case are strongly affected by the relative alignment between the phase plate and CRLs. (b) Single-shot horizontal aspheric phase lineouts are shown for the first, optimal and last positions in the scan, which were −20 µm, 2 µm and 20 µm, respectively. |