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Ultrafast active plasmonics at telecom wavelengths

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3 Author(s)
Rotenberg, N. ; Dept. of Phys., Univ. of Toronto, Toronto, ON, Canada ; Caspers, J.N. ; van Driel, H.M.

We demonstrate a number of techniques that can be used to modulate the coupling of light to surface plasmon polaritons on gold surfaces and on a subpicosecond time scale. In one technique interfering, 150 fs, 800 nm light pulses can be used to generate a transient thermal grating on a flat gold surface and this grating can be used to couple incident light to a surface plasmon polariton. In the case of a gold-coated silicon grating, optically induced Drude contributions to the dielectric constant of the silicon can modulate the coupling efficiency of a probe light pulse. In the latter case, the spectral range is broadband in nature and covers telecommunication wavelengths.

Published in:

Transparent Optical Networks (ICTON), 2011 13th International Conference on

Date of Conference:

26-30 June 2011