Figure 2. Time-resolved measurements of the scales.

(a,b) Time-of-flight of light transmitted through the scales of Cyphochilus and L. stigma, respectively (open triangles). The reference measurement (cross-correlation) of the probe pulse is shown as black squares. The fit of the probe pulse (green line) yields a pulse duration, in semilog scale of 130 fs. In contrast, the pulse transmitted through the scales exhibits an exponential tail over three orders of magnitude in intensity. The exponential fit (red line) yields lifetimes of τ ≈ 140 fs and τ ≈ 210 fs for (a,b), respectively.