Abstract
The negatively charged exciton (X-) is observed to strongly couple with the microcavity (MC)-confined photons in a GaAs quantum well containing a two-dimensional electron gas with 0<ne≤3×1010 cm-2. This strong coupling results in the formation of charged polaritons. The coupling strength is found to depend on √ne, in analogy to two-level atoms in a cavity. A model is suggested to explain this dependence. The analysis of the reflection and photoluminescence spectra shows that X- is strongly admixed with the neutral exciton (X) via their coupling with the MC-photons. The linewidth dependence on ne indicates that electron-polariton scattering is effective.
Original language | American English |
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Pages (from-to) | 481-487 |
Number of pages | 7 |
Journal | Physica Status Solidi (A) Applied Research |
Volume | 178 |
Issue number | 1 |
DOIs | |
State | Published - Mar 2000 |
Externally published | Yes |
Event | Optics of Excitons in Confined Systems (OECS-6) - Ascona, Switz Duration: 30 Aug 1999 → 2 Sep 1999 |