Abstract
We model high-field dynamic electro-optical effects in semiconductor quantum wires. Our nonperturbative, time-dependent studies employ weak optical pulses and strong terahertz fields such as are available from free-electron lasers. Three remarkably strong effects are demonstrated: (1) a strong Autler-Townes splitting of the exciton resonance via intraband exciton coupling, (2) phase-dependent two-photon induced gain just above the band gap, and (3) high-field harmonic generation in the THz regime.
- Received 26 July 2000
DOI:https://doi.org/10.1103/PhysRevB.63.153308
©2001 American Physical Society