Inhibition of light emission in a 2.5D photonic structure

TL;DR

This paper investigates how 2.5D photonic structures, combining photonic crystals and Bragg mirrors, can significantly inhibit light emission across a broad spectrum, with potential applications in controlling emission rates.

Contribution

It provides a comparative analysis of emission inhibition in different 2.5D photonic configurations using FDTD simulations and theoretical modeling.

Findings

Strong inhibition of the Purcell factor over broad spectral range

Average emission rate decreased by more than one decade

Inhibition effective regardless of emitter orientation and position

Abstract

We analyse inhibition of emission in a 2.5D photonic structures made up a photonic crystal (PhC) and Bragg mirrors using FDTD simulations. A comparison is made between an isolated PhC membrane and the same PhC suspended onto a Bragg mirror or sandwiched between 2 Bragg mirrors. Strong inhibition of the Purcell factor is observed in a broad spectral range, whatever the in-plane orientation and location of the emitting dipole. We analysed these results numerically and theoretically by simulating the experimentally observed lifetime of a collection of randomly distributed emitters, showing that their average emission rate is decreased by more than one decade, both for coupled or isolated emitters.