Near-field imaging of single walled carbon nanotubes emitting in the telecom wavelength range

Abstract : Hybrid systems based on carbon nanotubes emitting in the telecom wavelength range and Si-photonic platforms are promising candidates for developing integrated photonic circuits. Here, we consider semiconducting single walled carbon nanotubes (s-SWNTs) emitting around 1300 nm or 1550 nm wavelength. The nanotubes are deposited on quartz substrate for mapping their photoluminescence in hyperspectral near-field microscopy. This method allows for a sub-wavelength resolution in detecting the spatial distribution of the emission of single s-SWNTs at room temperature. Optical signature delocalized over several micrometers is observed, thus denoting the high quality of the produced carbon nanotubes on a wide range of tube diameters. Noteworthy, the presence of both nanotube bundles and distinct s-SWNT chiralities is uncovered.
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F. La China, N. Caselli, F. Sarti, F. Biccari, U. Torrini, et al.. Near-field imaging of single walled carbon nanotubes emitting in the telecom wavelength range. Journal of Applied Physics, American Institute of Physics, 2016, 120, pp.123110. ⟨http://scitation.aip.org/content/aip/journal/jap/120/12/10.1063/1.4963367⟩. ⟨10.1063/1.4963367⟩. ⟨cea-01380648⟩

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