Abstract
Based on a coupled simulation of carrier transport and optical cavity field, the intrinsic linewidth in resonant phonon terahertz quantum cascade lasers is self-consistently analyzed. For high power structures, values on the order of Hz are obtained. Thermal photons are found to play a considerable role at elevated temperatures. A linewidth enhancement factor of 0.5 is calculated for the investigated designs.
| Original language | English |
|---|---|
| Pages (from-to) | 25922-25927 |
| Number of pages | 6 |
| Journal | Optics Express |
| Volume | 18 |
| Issue number | 25 |
| DOIs | |
| State | Published - 6 Dec 2010 |