Towards the nonlinear acousto-magneto-plasmonics

Here we review the recent progress in experimental and theoretical research of interactions between the acoustic, magnetic and plasmonic transients in hybrid metal-ferromagnet multilayer structures excited by ultrashort laser pulses. Understanding the nonlinear aspects of the acoustic and magnetic dynamics in the materials as well as the peculiarities in the nonlinear optical detection process play a particular role. For example, the nonlinear optical detection is illustrated in Details by static probing the magneto-optical second harmonic generation using Kretschmann configuration in gold-cobalt-silver trilayer structures. In other experiments we Show how the nonlinear reshaping of giant ultrashort acoustic pulses propagating in Gold can be quantified by time-resolved plasmonic interferometry and how these ultrashort optical pulses dynamically modulate the optical nonlinearities. The effective medium approximation for the optical properties of hybrid multilayers facilitates the peculiarities of novel optical detection techniques. In the discussion we highlight some recent work on the nonlinear magneto-elastic interactions, and strain-induced effects in semiconductor quantum dots.