Exciton interactions in ZnSe-based thin layers and quantum wells have been studied using ultrafast four-wave-mixing. We present results to show the influence of quantum confinement on the exciton - acoustic-phonon scattering rate, and compare the coherence lifetimes of excitons and biexcitons. Using a thin ZnSe layer, we reveal a new signature of quantum beating, namely polarisation-state beating, which in turn reveals the role of excitation-induced dephasing in exciton interactions.
|Number of pages||5|
|Journal||Proceedings of SPIE - the International Society for Optical Engineering|
|Publication status||Published - 1999|
|Event||Proceedings of the 1998 International Conference on Optics and Optoelectronics - Silver Jubilee Symposium of the Optical Society of India - Dehradum, India|
Duration: 9 Dec 1998 → 12 Dec 1998