Double-grating-structured light microscopy using plasmonic nanoparticle arrays
- 10 April 2009
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 34 (8), 1255-1257
- https://doi.org/10.1364/ol.34.001255
Abstract
Structured illumination increases the spatial bandwidth of optical microscopes. We demonstrate bandwidth extension using a physical grating placed close to the sample. This comprises an array of elongated nanoparticles, whose localized surface plasmon resonance is polarization dependent. By arranging the particle orientation to vary with position the grating can be moved by changing the input polarization. A projected optical grating provides an additional independent mechanism for bandwidth extension. Experimental results showing bandwidth improvement in one direction are presented, and the measures necessary to extend the technique for routine imaging are discussed.Keywords
Funding Information
- the Engineering and Physical Science Research Council (EPSRC) (EP/C534689 EP/C534697)
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