Absorption induced transparency consists in a transmission peak observed in holey metal films when a molecular
dye is deposited on top of it [Hutchison et al., Angew. Chem. Int. Ed. 50, 2085 (2011)]. This transmission
feature appears unexpectedly close to one of the absorption energies of the molecules, hence its name. Tentative
explanations pointed to strong-coupling interactions between plasmons and molecules. However, we recently
demonstrated the actual mechanism behind, which takes place through a strong modification of the propagation
constant of holes. We also found that absorption induced transparency occurs in single holes and it is not
restricted to the optical range.