Electron-hole plasma heating and ultrafast modulation in a semiconductor laser under a terahertz electrical field are investigated using a set of hydrodynamic equations derived from the semiconductor Bloch equations. The self-consistent treatment of lasing and heating processes leads to the prediction of a strong saturation and degradation of modulation depth even at moderate terahertz field intensity. This saturation places a severe limit to bandwidth achievable with such scheme in ultrafast modulation. Strategies for increasing modulation depth are discussed.
|Original language||English (US)|
|Number of pages||8|
|Journal||Journal of Applied Physics|
|State||Published - Nov 1 2000|
ASJC Scopus subject areas
- Physics and Astronomy(all)