Optical microcavity with semiconducting single-wall carbon nanotubes

TL;DR

This paper demonstrates enhanced photoluminescence and spectral control in optical microcavities using semiconducting single-wall carbon nanotubes, highlighting their potential for photonic applications.

Contribution

The study provides experimental evidence of significant photoluminescence enhancement and spectral narrowing in carbon nanotube-based microcavities, advancing their application in photonics.

Findings

Photoluminescence signal increased by a factor of 30 to 180.

Achieved spectral full-width at half-maximum of 8 nm.

Microcavities with quality factor of 160 demonstrated.

Abstract

We report studies of optical Fabry-Perot microcavities based on semiconducting single-wall carbon nanotubes with a quality factor of 160. We experimentally demonstrate a huge photoluminescence signal enhancement by a factor of 30 in comparison with the identical film and by a factor of 180 if compared with a thin film containing non-purified (8,7) nanotubes. Futhermore, the spectral full-width at half-maximum of the photo-induced emission is reduced down to 8 nm with very good directivity at a wavelength of about 1.3 $\mu$m. Such results prove the great potential of carbon nanotubes for photonic applications.