Time-of-flight images of modulation-dissociated tetramers. We use a modulation frequency of 30 kHz, with an amplitude of 3.6° for 2 ms. Although the microwave ellipticity is about the same in c and d , the field orientation differs by about 90°. The dashed lines mark the extracted long axes of the patterns ( Methods ). The images are averaged over 84 measurements. Each pixel is a binning of 5 x 5 pixels from the raw images. Scale bars, 100 m.
