Application of a grating coupler for surface plasmon polariton excitation in a photoemission electron microscopy experiment

Till Leißner, Stephan Jauernik, Christoph Lemke, Jacek Fiutowski, Jakob Kjelstrup-Hansen, Horst-Günter Rubahn, Michael Bauer

Publikation: Konferencebidrag uden forlag/tidsskriftPaperForskning

Abstrakt

Surface plasmon polariton (SPP) excitation at a gold-vacuum interface via 800 nm light pulses mediated by a periodic array of gold ridges is probed at high lateral resolution by means of photoemission electron microscopy (PEEM). We directly monitor and quantify the coupling properties as a function of the number of grating ridges and compare the PEEM results with analytic calculations. An increase in the coupling efficiency of > 3 is observed when increasing the number of ridges from 1 to 6. We observe, however, that a further addition of ridges is rather ineffective. This saturation behavior is assigned to the grazing incidence excitation geometry intrinsic to a conventional PEEM scheme and the limited propagation distance of the SPP modes at the gold-vacuum interface at the used wavelength.
OriginalsprogEngelsk
Publikationsdato30. apr. 2012
Antal sider6
DOI
StatusUdgivet - 30. apr. 2012
Begivenhed SPIE Photonics EUROPE 2012 - Brussels, Belgien
Varighed: 16. apr. 201219. apr. 2012

Konference

Konference SPIE Photonics EUROPE 2012
LandBelgien
ByBrussels
Periode16/04/201219/04/2012

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