期刊
OPTICS LETTERS
卷 34, 期 8, 页码 1255-1257出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.001255
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资金
- Engineering and Physical Science Research Council (EPSRC) [EP/C534689, EP/C534697]
- Engineering and Physical Sciences Research Council [EP/C534697/1, EP/C534689/1] Funding Source: researchfish
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. (C) 2009 Optical Society of America
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