Ultrafast time-resolved spectroscopy of 1D metal-dielectric photonic crystals

Details Ultrafast time-resolved spectroscopy of 1D metal-dielectric photonic crystals Ultrafast time-resolved spectroscopy of 1D metal-dielectric photonic crystals

2009-03-12

arxiv.org/abs/0903.2115v1

Physics

Condensed Matter

Other Condensed Matter

7 pages, 5 figures

Scientific paper

We study the all-optical switching behavior of one-dimensional metal-dielectric photonic crystals due to the nonlinearity of the free metal electrons. A polychromatic pump-probe setup is used to determine the wavelength and pump intensity dependence of the ultrafast transmission suppression as well as the dynamics of the process on a subpicosecond timescale. We find ultrafast (sub-picosecond) as well as a slow (millisecond) behavior. We present a model of the ultrafast dynamics and nonlinear response which can fit the measured data well and allows us to separate the thermal and the electronic response of the system.

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