Stochastic Simulation of Emission Spectra and Classical Photon Statistics of Quantum Dot Superluminescent Diodes

TL;DR

This paper introduces a stochastic simulation method to analyze the emission spectra and photon statistics of quantum dot superluminescent diodes, aligning well with experimental data and quantum models.

Contribution

A novel stochastic procedure for modeling the correlation spectra and photon statistics of quantum dot superluminescent diodes, capable of fitting various experimental spectral profiles.

Findings

Accurate reproduction of experimental emission spectra.

Good agreement with quantum statistical predictions.

Effective modeling of first- and second-order correlation functions.

Abstract

We present a stochastic procedure to investigate the correlation spectra of quantum dot superluminescent diodes. The classical electric field of a diode is formed by a polychromatic superposition of many independent stochastic oscillators. Assuming fields with individual carrier frequencies, Lorentzian linewidths and amplitudes we can form any relevant experimental spectrum using a least square fit. This is illustrated for Gaussian and Lorentzian spectra, Voigt profiles and box shapes. Eventually, the procedure is applied to an experimental spectrum of a quantum dot superluminescent diode which determines the first- and second-order temporal correlation functions of the emission. We find good agreement with the experimental data and a quantized treatment. Thus, a stochastic field represents broadband light emitted by quantum dot superluminescent diodes.