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Tuning the Quantum Efficiency of Random Lasers - Intrinsic Stokes-Shift and Gain
| Content Provider | Paperity |
|---|---|
| Author | Lubatsch, Andreas Frank, Regine |
| Abstract | We report the theoretical analysis for tuning the quantum efficiency of solid state random lasers. Vollhardt-Wölfle theory of photonic transport in disordered non-conserving and open random media, is coupled to lasing dynamics and solved positionally dependent. The interplay of non-linearity and homogeneous non-radiative frequency conversion by means of a Stokes-shift leads to a reduction of the quantum efficiency of the random laser. At the threshold a strong decrease of the spot-size in the stationary state is found due to the increase of non-radiative losses. The coherently emitted photon number per unit of modal surface is also strongly reduced. This result allows for the conclusion that Stokes-shifts are not sufficient to explain confined and extended mode regimes. |
| File Format | HTM / HTML |
| DOI | 10.1038/srep17000 |
| Journal | Scientific Reports |
| Volume Number | 5 |
| Language | English |
| Publisher | Nature Publishing Group |
| Publisher Date | 2015-11-23 |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
