Stimulated scattering of excitons into microcavity polaritons

✍ Scribed by R. Huang; F. Tassone; Y. Yamamoto

• Book ID: 104306677
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 264 KB
• Volume: 47
• Category: Article
• ISSN: 0167-9317
• DOI: 10.1016/s0167-9317(99)00225-7

✦ Synopsis

We have observed the bosonic enhancement of the elastic exciton-exciton scattering rate in a semiconductor microcavity.

The bosonic signature is in the enhancement of the scattering rate that is proportional to the final state occupation number. This gain process for exciton-polaritons is distinctly different from that in a conventional photon laser, because of the fermionic nature of the exciton's constituents, the electron and hole. This distinction becomes prominent at large final state occupation numbers, where we observe a saturation and reduction in the gain. We discuss the origins of this saturation behavior.