Fig. 1 Interferometric scattering effect. (IMAGE)
Caption
Fig. 1 Interferometric scattering effect. (a-d) Schematic production of initial and secondary scatterers. The initial scatterer, a nanopore, is purposely induced by femtosecond laser induced micro-explosion, from which the scattered light interferes with the incident light, producing a secondary scatterer. The 3rd scatter is then created by the interferometric scattering between the 2nd scatter and the incidence. The wave vector k is oriented vertically downward, the polarization direction E is perpendicular to the paper plane, and the laser spot moves to the right. (e-h) Scanning electron microscopic images. Evolution of the structure inside silica at a depth of 50 μm. The lateral offset is δ =100 nm, with the wave vector, polarization, and spot movement directions consistent with the schematic.
Credit
Hongbo Sun et al.
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