  Plasmonic nanoresonators of core-shell composition and nanorod shape were
optimized to tune their absorption cross-section maximum to the central
wavelength of a short pulse. Their distribution along a pulse-length scaled
target was optimized to maximize the absorptance with the criterion of minimal
absorption difference in between neighbouring layers. Successive approximation
of layer distributions made it possible to ensure almost uniform deposited
energy distribution up until the maximal overlap of two counter-propagating
pulses. Based on the larger absorptance and smaller uncertainty in absorptance
and energy distribution core-shell nanoresonators override the nanorods.
However, optimization of both nanoresonator distributions has potential
applications, where efficient and uniform energy deposition is crucial,
including phase transitions and even fusion.
