Excitation of bound plasmons along nanoscale stripe waveguides: A comparison of end and grating coupling techniques
Data(s) |
01/04/2015
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Resumo |
In this paper we excite bound long range stripe plasmon modes with a highly focused laser beam. We demonstrate highly confined plasmons propagating along a 50 μm long silver stripe 750 nm wide and 30 nm thick. Two excitation techniques were studied: focusing the laser spot onto the waveguide end and focusing the laser spot onto a silver grating. By comparing the intensity of the out-coupling photons at the end of the stripe for both grating and end excitation we are able to show that gratings provide an increase of a factor of two in the output intensity and thus out-coupling of plasmons excited by this technique are easier to detect. Authors expect that the outcome of this paper will prove beneficial for the development of passive nano-optical devices based on stripe waveguides, by providing insight into the different excitation techniques available and the advantages of each technique. |
Formato |
application/pdf |
Identificador | |
Publicador |
Optical Society of America |
Relação |
http://eprints.qut.edu.au/83671/1/2314602%20copy.pdf http://www.opticsinfobase.org/view_article.cfm?gotourl=http%3A%2F%2Fwww%2Eopticsinfobase%2Eorg%2FDirectPDFAccess%2F46534583%2DFE34%2DAF15%2D9C641827C84B5AFC%5F315274%2Foe%2D23%2D8%2D10188%2Epdf%3Fda%3D1%26id%3D315274%26seq%3D0%26mobile%3Dno&org= DOI:10.1364/OE.23.010188 Perera, C.S., Vernon, K.C., Funston, A.M., Cheng, H., Eftekhari, F., & Davis, T.J. (2015) Excitation of bound plasmons along nanoscale stripe waveguides: A comparison of end and grating coupling techniques. Optics Express, 23(8), pp. 10188-10197. http://purl.org/au-research/grants/ARC/DP110101454 |
Direitos |
Copyright 2015 Optical society of America |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Institute for Future Environments; Science & Engineering Faculty |
Tipo |
Journal Article |