An intense coherent laser field couples two electron subbands in quantum wells. Using generalized self-consistent density functional theory, we study the nature of the Coulomb and light-induced electronic renormalization. We show electric-field-induced transparency and light amplification without population inversion of a weak probe beam in such a system. The effects of the pump field strength, electron density, and δ-doping position are investigated.
© 1994 Optical Society of America
Original Manuscript: December 2, 1993
Published: June 1, 1994
Yang Zhao, Danhong Huang, and Cunkai Wu, "Electric-field-induced quantum coherence of the intersubband transition in semiconductor quantum wells," Opt. Lett. 19, 816-818 (1994)