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Coherence Converting Plasmonic Hole Arrays |
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| Authors: | Choon How Gan Yalong Gu Taco D Visser Greg Gbur |
| Institution: | 1. Electronics and Photonics Department, Institute of High Performance Computing Agency for Science, Technology and Research, 1 Fusionopolis Way, Singapore, 138632, Singapore 2. Department of Physics and Optical Science, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC, 28223, USA 3. Department of Physics and Astronomy, Free University, De Boelelaan 1081, 1081 HV, Amsterdam, the Netherlands 4. Department of Electrical Engineering, Delft University of Technology, Mekelweg 4, 2628 CD, Delft, the Netherlands |
| Abstract: | Simulations are presented that demonstrate that the global state of spatial coherence of an optical wavefield can be altered on transmission through an array of subwavelength-sized holes in a metal plate that supports surface plasmons. It is found that the state of coherence of the emergent field strongly depends on the separation between the holes and their scattering strength. Our findings suggest that subwavelength hole arrays on a metal film can be potentially employed as a plasmon-assisted coherence converting device, useful in modifying the directionality, spectrum, and polarization of the transmitted wave. |
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