Conference paper
Collective effects in nanolasers: Steady-state characteristics and photon statistics
In the traditional rate equation-approach to nanolasers, the active material is modelled as a collection of independent emitters [1], but in recent years it has become increasingly clear that radiative coupling of the emitters in the cavity can significantly change the characteristics of a (nano)laser under certain conditions [2-5].
The collective effects arising as an emitter-emitter coupling are known to cause a reduction in the steady-state intensity for small values of the pump rate [2, 3], which means the effective jump at threshold becomes larger. As a result, the fraction β of spontaneous emission going into the lasing mode, usually associated with the inverse of the height of this intensity jump, is potentially underestimated in a model neglecting collective effects.
Additionally, recent experiments and numerical models [3, 5] show that the inclusion of collective effects leads to super-thermal values of the photon auto-correlation function g2(0), i.e. values larger than g2(0) = 2 associated with thermal radiation.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2017 |
| Pages: | 1-1 |
| Proceedings: | The 2017 European Conference on Lasers and Electro-Optics |
| ISBN: | 1509067361 , 150906737X , 150906737x , 9781509067367 and 9781509067374 |
| Types: | Conference paper |
| DOI: | 10.1109/CLEOE-EQEC.2017.8087631 |
| ORCIDs: | André, Emil Cortes , Mørk, Jesper and Wubs, Martijn |
Couplings Mathematical model Numerical models Quantum dots Spontaneous emission Steady-state
Fourier analysis I/O-graphs analytical determination analytical expressions analytical solutions apparent β-factor cavity collective effects coupled differential equations differential equations emitter-emitter interactions equations of motion interemitter coupling interemitter interaction terms laser beams laser cavity resonators nanophotonics optical correlation optical pumping orders of magnitude original operator EOM photon autocorrelation function photon statistics pump rate quantum dot lasers quantum-dot nanolaser rate equation approach steady-state characteristics two-level scheme
