Published/Posted: July 15, 2014
Authors: Suess, R. J.; Jadidi, M. M.; Kim, K.; Murphy, T. E.
DOI: 10.1364/OE.22.017466Abstract: The nonlinear response of nanoporous silicon optical waveguides is investigated using a novel pump-probe method. In this approach we use a two-frequency heterodyne technique to measure the pump-induced transient change in phase and intensity in a single measurement. We measure a 100 picosecond material response time and report behavior matching a physical model dominated by free-carrier effects significantly stronger than those observed in traditional silicon-based waveguides.
R. J. Suess, M. M. Jadidi, K. Kim and T. E. Murphy, "Characterization of optical nonlinearities in nanoporous silicon waveguides via pump-probe heterodyning technique", Opt. Express 22(14) 17466-17477 (2014)
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