RTC SEMINAR
"Ultrafast Interferometric Investigations of Resonant
Secondary Emission from Semiconductor Quantum Wells"
Dan Birkedal and Jagdeep Shah
Bell Laboratories
Lucent Technologies, Holmdel, NJ
September 1998
Abstract:
We report the first observation of resonant secondary emission from quantum well excitons using ultrafast spectral interferometry. Observation of high-contrast spectral fringes demonstrates a significant phase-correlation of the spectral components of Rayleigh scattered light and allows us to determine the temporal dynamics of the coherent emission. The results contradict the current theories for resonant Rayleigh scattering based on ensemble averaging, and show the non-ergodic nature of resonance Rayleigh scattering from semiconductor quantum wells.
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