Quantum beats of excitons in Zn1−xCdxSe/ZnSe multiple quantum well structures
- 15 April 1995
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 77 (8) , 4145-4147
- https://doi.org/10.1063/1.359505
Abstract
We investigate the coherent dynamics of excitons in Zn1−x Cd x Se/ZnSe multiple quantum wells by means of spectrally integrated and spectrally resolved transient four‐wave mixing. When simultaneously exciting the heavy‐ and light‐hole exciton resonance, a beating of the spectrally integrated four‐wave mixing signal is observed. The measured beating period does not exactly correspond to the energetic split of the involved free‐exciton resonances. By including a bound‐exciton state in the calculation of the four‐wave mixing signal, quite a reasonable fit can be achieved yielding the dephasing times of the excitonic transitions. The spectrally resolved signal allows to determine the origin of the oscillation as a quantum beat between the light‐ and heavy‐hole exciton.This publication has 16 references indexed in Scilit:
- Femtosecond wave mixing experiments in ZnCdSe/ZnSe quantum wellsApplied Physics Letters, 1994
- Dynamical properties of excitons in Zn1−xCdxSe/ZnSe quantum wells and Zn1−xCdxSe epilayers grown by molecular beam epitaxyJournal of Crystal Growth, 1994
- The molecular beam epitaxial growth of wide gap II–VI injection lasers and light-emitting diodesThin Solid Films, 1993
- (Zn,Cd)Se/ZnSe quantum-well lasers: Excitonic gain in an inhomogeneously broadened quasi-two-dimensional systemPhysical Review B, 1993
- Optical physics and laser devices in II–VI quantum confined heterostructuresPhysica B: Condensed Matter, 1993
- Quantum beats versus polarization interference: An experimental distinctionPhysical Review Letters, 1992
- Excitonic gain and laser emission in ZnSe-based quantum wellsPhysical Review Letters, 1992
- Quantum beats of free and bound excitons in GaAs/As quantum wellsPhysical Review B, 1990
- Quantum beats of light hole and heavy hole excitons in quantum wellsApplied Physics Letters, 1990
- Quantum beats of excitons in quantum wellsPhysical Review Letters, 1990