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document
van Dijk, T. (author), Schouten, H.F. (author), Ubachs, W. (author), Visser, T.D. (author)
conference paper 2010
document
Raghunathan, S.B. (author), Gan, C.H. (author), Van Dijk, T. (author), Ea Kim, B. (author), Schouten, H.F. (author), Ubachs, W. (author), Lalanne, P. (author), Visser, T.D. (author)
We report a plasmon steering method that enables us to dynamically control the direction of surface plasmons generated by a two-mode slit in a thin metal film. By varying the phase between different coherent beams that are incident on the slit, individual waveguide modes are excited. Different linear combinations of the two modes lead to...
journal article 2012
document
Schouten, H.F. (author), Visser, T.D. (author), Gbur, G. (author), Lenstra, D. (author), Blok, H. (author)
journal article 2004
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Raghunathan, S.B. (author), Schouten, H.F. (author), Ubachs, W. (author), Ea Kim, B. (author), Gan, C.H. (author), Visser, T.D. (author)
Dynamic control of the direction of radiation of the light emanating from a subwavelength slit carved out of a thin metal film is experimentally demonstrated. This is achieved by selective excitation of the individual guided modes in the slit by setting the phase of three coherent laser beams. By changing the voltage across a piezoelement, we...
journal article 2013
document
Schouten, H.F. (author), Visser, T.D. (author), Lenstra, D. (author), Blok, H. (author)
journal article 2003
document
Van Dijk, T. (author), Schouten, H.F. (author), Visser, T.D. (author)
We analyze the coherence singularities that occur in the far field that is generated by a broad class of partially coherent sources. It is shown that for rotationally symmetric planar quasihomogeneous sources the coherence singularities form a two-dimensional surface in a reduced three-dimensional space. We illustrate our results by studying the...
journal article 2009
document
Raghunathan, S.B. (author), Schouten, H.F. (author), Visser, T.D. (author)
It was recently shown that so-called coherence vortices, singularities of the two-point correlation function, generally occur in partially coherent electromagnetic beams. We study the three-dimensional structure of these singularities and show that in successive cross sections of a beam a rich variety of topological reactions takes place. These...
journal article 2013
document
Schouten, H.F. (author), Kuzmin, N. (author), Dubois, G. (author), Visser, T.D. (author), Gbur, G. (author), Alkemade, P.F.A. (author), Blok, H. (author), 't Hooft, G.W. (author), Lenstra, D. (author), Eliel, E.R. (author)
journal article 2005
document
Raghunathan, S.B. (author), Schouten, H.F. (author), Visser, T.D. (author)
We demonstrate that coherence vortices, singularities of the correlation function, generally occur in partially coherent electromagnetic beams. In successive cross sections of Gaussian Schell-model beams, their locus is found to be a closed string. These coherence singularities have implications for both interference experiments and correlation...
journal article 2012
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