Collective effects in nanolasers: Steady-state characteristics and photon statistics
| Autor: | Emil C. André, Martijn Wubs, I. E. Protsenko, J. Mark |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Coupling Photon Steady state 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Thermal radiation Quantum mechanics Quantum electrodynamics 0103 physical sciences Radiative transfer Jump Spontaneous emission 010306 general physics 0210 nano-technology Lasing threshold |
| Zdroj: | 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| DOI: | 10.1109/cleoe-eqec.2017.8087631 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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