Delayed optical nonlinearity of thin metal films

Abstract

Metals typically have very large nonlinear susceptibilities, whose origin is mainly of thermal character. We model the cubic nonlinearity of thin metal films by means of a delayed response derived \textit{ab initio} from an improved version of the classic two temperature model. We validate our model by comparison with ultrafast pump-probe experiments on gold films.

Cited by in corpus (12)

• Experimental and ab initio ultrafast carrier dynamics in plasmonic nanoparticles
• Beyond the perturbative description of the nonlinear optical response of low-index materials
• Transient optical symmetry breaking for ultrafast broadband dichroism in plasmonic metasurfaces
• Ultrafast dynamics of electrons and phonons: from the two-temperature model to the time-dependent Boltzmann equation
• Superconducting fluctuations probed by the Higgs mode in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$ thin films
• Enhanced nonlinear optical response of single metal-dielectric nanocavities resonating in the near-infrared
• Evidence for cascaded third harmonic generation in non-centrosymmetric gold nanoantennas
• Ultrafast Surface Plasmonic Switch in Non-Plasmonic Metals
• Understanding the nonlinear optical response of epsilon near zero materials in the time-domain
• Direct Observation of Ultrafast Singlet Exciton Fission in Three Dimensions
• Anomalous electronic energy relaxation and soft phonons in the Dirac semimetal Cd${}_3$As${}_2$
• Heat-induced soliton self-frequency redshift in the ultrafast nonlinear dynamics of active plasmonic waveguides