Ultrafast coherent spectroscopy in II-VI widegap semiconductors

Ajoy Kumar Kar; A. Tookey

doi:10.1117/12.346781

29 April 1999 Ultrafast coherent spectroscopy in II-VI widegap semiconductors

Ajoy Kumar Kar, A. Tookey

Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346781
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India

Abstract

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 polarization-state beating, which in turn reveals the role of excitation-induced dephasing in exciton interactions.

Citation Download Citation

Ajoy Kumar Kar and A. Tookey "Ultrafast coherent spectroscopy in II-VI widegap semiconductors", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); https://doi.org/10.1117/12.346781

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