Optical control of individual carbon nanotube light emitters by spectral double resonance in silicon microdisk resonators

TL;DR

This paper demonstrates the integration of individual carbon nanotube light emitters with silicon microdisk resonators, enabling spectral control of emission through double resonance, advancing nanoscale photonic circuit applications.

Contribution

It introduces a method to control nanotube emission via spectral double resonance in silicon microdisks, a novel approach for integrated nanoscale light sources.

Findings

Efficient coupling of nanotube emission to whispering gallery modes.

Spectral tuning of emission through resonance control.

Potential for individually addressable nanotube emitters in photonic circuits.

Abstract

Single-walled carbon nanotubes have advantages as a nanoscale light source compatible with silicon photonics because they show room-temperature luminescence at telecom-wavelengths and can be directly synthesized on silicon substrates. Here we demonstrate integration of individual light-emitting carbon nanotubes with silicon microdisk resonators. Photons emitted from nanotubes are efficiently coupled to whispering gallery modes, circulating within the disks and lighting up their perimeters. Furthermore, we control such emission by tuning the excitation wavelength in and out of resonance with higher order modes in the same disk. Our results open up the possibilities of using nanotube emitters embedded in photonic circuits that are individually addressable through spectral double resonance.