Complex optical index of single wall carbon nanotube films from the near-infrared to the terahertz spectral range

Sylvain Maine; Charlie Koechlin; Stéphanie Rennesson; Julien Jaeck; Simon Salort; Bruno Chassagne; Fabrice Pardo; Jean-Luc Pelouard; Riad Haïdar

doi:10.1364/AO.51.003031

Complex optical index of single wall carbon nanotube films from the near-infrared to the terahertz spectral range

Appl Opt. 2012 May 20;51(15):3031-5. doi: 10.1364/AO.51.003031.

Authors

Sylvain Maine¹, Charlie Koechlin, Stéphanie Rennesson, Julien Jaeck, Simon Salort, Bruno Chassagne, Fabrice Pardo, Jean-Luc Pelouard, Riad Haïdar

Affiliation

¹ Laboratoire de Photonique et de Nanostructures-LPN-CNRS, Marcoussis, France.

PMID: 22614607
DOI: 10.1364/AO.51.003031

Abstract

We retrieve the complex optical index of single-walled carbon nanotube (CNT) films in the 0.6-800 μm spectral range. Results are obtained from a complete set of optical measurements, reflection and transmission, of free-standing CNT films using time domain spectroscopy in the terahertz (THz) and Fourier transform infrared (IR) spectroscopy in the visible-IR. Based on a Drude-Lorentz model, our results reveal a global metallic behavior of the films in the IR, and confirm their high optical index in the THz range.