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)

1 European Laboratory for Nonlinear Spectroscopy
2 UniFI - Università degli Studi di Firenze = University of Florence
3 IEF - Institut d'électronique fondamentale
4 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences

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.

Domains: Chemical Sciences; Material chemistry

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, 2016, 120, pp.123110. ⟨10.1063/1.4963367⟩. ⟨cea-01380648⟩