Many-body Coulomb effects in room-temperature II–VI quantum well semiconductor lasers

This letter investigates the gain medium properties in II–VI blue-green quantum well semiconductor lasers, including band structure and carrier interactions in the electron-hole plasma are found to be significantly more important than in infrared III–V lasers. In particular, the interband Coulombic enhancement of the optical transitions, together with a band gap renormalization result in an increase in gain and a reduction in the antiguiding or linewidth enhancement factor.