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

F. La China 1, 2, * N. Caselli 1, 2 F. Sarti 1, 2 F. Biccari 1 U. Torrini 2 F. Intonti 1, 2 A. Vinattieri 1, 2 E. Durán-Valdeiglesias 3 C. Alonso Ramos 3 X. Le Roux 3 M. Balestrieri 4 A. Filoramo 4 L. Vivien 3 M. Gurioli 1, 2
* Corresponding author
1 European Laboratory for Nonlinear Spectroscopy
2 UNIFI - University of Florence
3 IEF - Institut d'électronique fondamentale
4 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
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. ⟨10.1063/1.4963367⟩. ⟨cea-01380648⟩

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