LASING WITH AND WITHOUT POPULATION INVERSION IN A QUANTUM DOT NANOSTRUCTURE VIA AN INCOHERENT PUMPING FIELD
Seyyed Hossein Asadpour, Elnaz Ahmadi Sangachin
The effect of incoherent pumping field on absorption spectrum and population inversion in a four-level quantum dot nanostructure are investigated. It is found that with incoherent pumping field the probe field absorption can be converted to probe field gain. Also, it is found that with combine effect of incoherent pumping field and electron tunneling the lasing can be obtained in the absence or presence of population inversion.
International Journal of Modern Physics B•Jun 5, 2012•5 citations