Telecommunication wavelength confined Tamm plasmon structures containing InAs/GaAs quantum dot emitters at room temperature

TL;DR

This paper demonstrates gold microdisc structures that produce confined Tamm plasmons resonant around 1.3 μm, significantly enhancing quantum dot photoluminescence at room temperature for scalable telecom applications.

Contribution

It introduces a simple fabrication method for confined Tamm plasmon structures with quantum dots, achieving enhanced emission and tunable resonances at telecom wavelengths.

Findings

Order of magnitude increase in quantum dot photoluminescence

Spectral tuning of resonance via disc diameter

Mode confinement confirmed by dispersion relation measurements

Abstract

We experimentally demonstrate gold microdisc structures that produce confined Tamm plasmons (CTPs), interface modes between a metal layer and a distributed Bragg reflector, resonant around 1.3 {\mu}m. Quantum dots grown within the structures show an order of magnitude increase in the photoluminescence emitted at room temperature. Varying the disc diameter, we show spectral tuning of the resonance and measure the dispersion relation as evidence of mode confinement. The simplicity of fabrication and tuneability of these structures make CTPs an ideal platform for making scalable telecom devices based on quantum dots.