Toward Full Spatio-Temporal Control on the Nanoscale

Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
Nano Letters (Impact Factor: 13.59). 11/2007; 7(10):3145-9. DOI: 10.1021/nl071718g
Source: PubMed


We introduce an approach to implement full coherent control on nanometer length scales. It is based on spatiotemporal modulation of the surface plasmon polariton (SPP) fields at the thick edge of a nanowedge. The SPP wavepackets propagating toward the sharp edge of this nanowedge are compressed and adiabatically concentrated at a nanofocus, forming an ultrashort pulse of local fields. The profile of the focused waveform as a function of time and one spatial dimension is completely coherently controlled.

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