Derivation of third-order nonlinear susceptibility of thin metal films as a delayed optical response

作者:Conforti Matteo*; Della Valle Giuseppe
来源:Physical Review B, 2012, 85(24): 245423.
DOI:10.1103/PhysRevB.85.245423

摘要

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

  • 出版日期2012-6-11