Collective effects in nanolasers: Steady-state characteristics and photon statistics

Emil Cortes André, I. E. Protsenko, Jesper Mørk, Martijn Wubs

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review


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.
Original languageEnglish
Title of host publicationProceedings of 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Number of pages1
Publication date2017
Publication statusPublished - 2017
EventThe European Conference on Lasers and Electro-Optics, CLEO_Europe 2017 - Munich (ICM), Germany., Munich, Germany
Duration: 25 Jun 201729 Jun 2017


ConferenceThe European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
LocationMunich (ICM), Germany.
Internet address


  • Mathematical model
  • Spontaneous emission
  • Couplings
  • Numerical models
  • Quantum dots
  • Steady-state

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