Power enhancement scaling of the low-frequency radiation generated by optical rectification on metal surface
P.N.Lebedev Physical Institute of the RAS, Leninskiy pr., 53, 119991, Moscow, Russia
Accepted: 29 July 2020
Published online: 5 August 2020
An analytical model supported by the numerical simulations describing the effectiveness of the terahertz radiation generation on the surfaces of metals is presented. Properties of the energy deposition and transfer are shown to play a primary role in quantitative evaluation of the THz radiation generation efficiency. Transitions between different nonlinear scaling laws for high and low energies and different sample thicknesses are considered. Using low-frequency energy generated by the optical rectification on metal surfaces allows us to investigate nonlinear effects in the quasistatic regime and reveal additional information on the transport and optical properties of metals.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020