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Proceedings Paper

Saturating refractive nonlinearities and optical bistability in ZnSe/CdZnSe MQWs at room temperature
Author(s): Hongyu Li; De Zen Shen; Jiying Zhang; Shumei Wang; Baojun Yang; Guangyou Yu
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Paper Abstract

The excitonic nonlinear refractive index was calculated by using Kramers-Kronig relation and the saturating absorption of ZnSe/CdZnSe multiple quantum wells (MQWs) was studied under different pump intensities. The maximum nonlinear refractive index change is about -6.19 X 10-3. Excitonic optical bistability in ZnSe/CdZnSe MQWs is investigated at room temperature. The result indicates that the threshold and contrast ratio for the optical bistability in ZnSe/CdZnSe MQWs are about 210Kw/cm2 and 2:1, respectively. On the basis of the excitonic nonlinear theories and excitonic absorption spectra in the ZnSe/CdZnSe MQWs, we attribute the major nonlinear mechanism of the optical bistability in the ZnSe/CdZnSe MQWs to the phase space filling of excitonic states and excitonic band broadening due to exciton-exciton interactions.

Paper Details

Date Published: 17 August 1998
PDF: 4 pages
Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); doi: 10.1117/12.318110
Show Author Affiliations
Hongyu Li, Changchun Institute of Physics (China)
De Zen Shen, Changchun Institute of Physics (China)
Jiying Zhang, Changchun Institute of Physics (China)
Shumei Wang, Changchun Institute of Physics (China)
Baojun Yang, Changchun Institute of Physics (China)
Guangyou Yu, Changchun Institute of Physics (China)

Published in SPIE Proceedings Vol. 3554:
Photorefractive Materials: Phenomena and Related Applications II
Peixian Ye; Tsutomu Shimura; Ratnakar R. Neurgaonkar, Editor(s)

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