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Proceedings Paper

Ultrafast coherent spectroscopy in II-VI widegap semiconductors
Author(s): Ajoy Kumar Kar; A. Tookey
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Paper 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.

Paper Details

Date Published: 29 April 1999
PDF: 5 pages
Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); doi: 10.1117/12.346781
Show Author Affiliations
Ajoy Kumar Kar, Heriot-Watt Univ. (United Kingdom)
A. Tookey, Heriot-Watt Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 3729:
Selected Papers from International Conference on Optics and Optoelectronics '98
Kehar Singh; Om Prakash Nijhawan; Arun Kumar Gupta; A. K. Musla, Editor(s)

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