Waveguide coupled cavity-enhanced light emission from individual carbon nanotubes

We demonstrate an individual single-walled carbon nanotube light emitter integrated onto a microcavity and a waveguide operating in the telecom wavelength regime. Light emission from the carbon nanotube is enhanced at the cavity resonance and is efficiently extracted from the waveguide facet. We have transferred carbon nanotubes to a nanobeam cavity with a dry process, ensuring that an individual carbon nanotube is used. The guided light emission from a chirality-identified single carbon nanotube has a narrow linewidth of less than 1.3nm and an off-resonance rejection of similar to 17 dB. The waveguide-coupled device configuration is compatible with fully integrated on-chip designs and is promising for carbon-nanotube-based photonics. (C) 2021 Author(s).

Automated summary

The study demonstrates the integration of an individual single-walled carbon nanotube light emitter onto a microcavity and a waveguide operating in the telecom wavelength regime, showing enhanced light emission and promising potential for carbon-nanotube-based photonics.