High intensity coherent transient in multiple quantum wells

✍ Scribed by R. Raj; I. Abram; J.A. Levenson

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 312 KB
• Volume: 10
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1016/0749-6036(91)90305-b

✦ Synopsis

In this paper we report Degenerate Four Wave Mixing ( DFm) experiments on the excitons of GaAs/AlGaAs Multiple Quantum Well (MQW) at high incident intensities. These experiments provide a clear manifestation of Many-Body Interactions (MBI) among the excitons, in the form of a multi-photon (intensity-dependant) resonance at the low energy side of the heavy-hole exciton of the first subband of the MQW. The temporal resolution of the DFWM response provides a demonstration of the multi-photon nature of this resonance and, hence, of its MB1 origin.