Publikation: Nonlinear optical imaging of single plasmonic nanoparticles with 30 nm resolution
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2015
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Physical Chemistry, Chemical Physics : PCCP. 2015, 17(33), pp. 21288-21293. ISSN 1463-9076. eISSN 1463-9084. Available under: doi: 10.1039/c4cp05342g
Zusammenfassung
We show that background free nonlinear optical imaging of Au nanostructures with a resolution down to 30 nm can be achieved. To attain such performance, an ultrafast laser source (110 fs pulse duration) has been integrated into a parabolic mirror assisted scanning near-field optical microscope. Combining nonlinear hyperspectral imaging and the simultaneously obtained topography, the setup allows one to directly correlate/assign locations with nonlinear signals originating from either second harmonic generation or two-photon excitation processes. The contrast mechanisms of the far-field background free nonlinear optical image are discussed based on the different tip-sample coupling schemes and the selective excitation of the plasmonic modes.
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HORNEBER, Anke, Kai BRAUN, Jan ROGALSKI, Paul LEIDERER, Alfred J. MEIXNER, Dai ZHANG, 2015. Nonlinear optical imaging of single plasmonic nanoparticles with 30 nm resolution. In: Physical Chemistry, Chemical Physics : PCCP. 2015, 17(33), pp. 21288-21293. ISSN 1463-9076. eISSN 1463-9084. Available under: doi: 10.1039/c4cp05342gBibTex
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year={2015},
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title={Nonlinear optical imaging of single plasmonic nanoparticles with 30 nm resolution},
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volume={17},
issn={1463-9076},
journal={Physical Chemistry, Chemical Physics : PCCP},
pages={21288--21293},
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