Figure 4

(a) BLS intensity map measured on the HIM-cut strip with 100 nm gap as a function of the in-plane bias field applied perpendicular to the strip’s long axis and for different laser beam positions across the sample (denoted by the red arrow in the top inset). The measurements were performed at an excitation frequency of 14.059 GHz. Rectangles on the map are guides to the eye to indicate the strip edges. (b) BLS intensity as a function of the beam position measured for \(\mu _0 H\) = 295 mT, corresponding to the quasi-uniform \(\upmu\)FMR mode. (c, d) BLS intensity vs. beam position measured for the fields corresponding to (c) the modes 1 and 1i and (d) the modes 2 and 2i localized at the outer (black circles) and the inner (red squares) edges of the cut strips, respectively. The shaded rectangles in (b–d) denote the positions of the strip cross sections with respect to the scanned range.