Passage of a CS in front of a linear array of five detectors (A)–(E). (a) Time traces of these detectors, displaced vertically by 0.02 units for clarity. Detector A monitors the point addressed by the writing beam, applied at time . (b) Positions of the detectors in the transverse plane (indicated by squares). The area monitored by each detector has a diameter of less than 7.2 μm and the separation between neighboring detectors is 8.9 μm. Also shown is a time-averaged output image of the VCSEL during the CS drift (charge coupled device camera exposure time of about 1 ms). Figure reproduced from [110].
