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Theoretical study of a nonlinear fast silicon photoconductive switch

Published online by Cambridge University Press:  15 May 1999

T. Bouchemat ,
F. Hobar ,
A. Koster ,
S. Laval ,
M. Bouchemat  and
D. Pascal
T. Bouchemat
Affiliation:
Institut d'Électronique, Université de Constantine, route d'Aïn el Bey, Constantine, Algeria
F. Hobar
Affiliation:
Institut d'Électronique, Université de Constantine, route d'Aïn el Bey, Constantine, Algeria
A. Koster
Affiliation:
Institut d'Électronique Fondamentale (CNRS URA 22), Bâtiment 220, Université Paris Sud, 91405 Orsay Cedex, France
S. Laval*
Affiliation:
Institut d'Électronique Fondamentale (CNRS URA 22), Bâtiment 220, Université Paris Sud, 91405 Orsay Cedex, France
M. Bouchemat
Affiliation:
Institut d'Électronique, Université de Constantine, route d'Aïn el Bey, Constantine, Algeria
D. Pascal
Affiliation:
Institut d'Électronique Fondamentale (CNRS URA 22), Bâtiment 220, Université Paris Sud, 91405 Orsay Cedex, France
*
[email protected]
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Abstract

Silicon-On-Insulator waveguide can be used as photoconductor, the light being coupled in the silicon film by a diffraction grating. Nonlinear effects are induced by the photogeneration of electron-hole pairs. This leads to photocurrent variations which are much faster than in linear regime and also much steeper than the incident light pulse. A model is presented which takes into account the refractive index variations arising from both the excess carrier density and the temperature rise induced by carrier recombination and Joule effect. The photocurrent is calculated for various values of the incident light power, incidence angle and pulse duration.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 6 , Issue 2 , May 1999 , pp. 165 - 169
Copyright
© EDP Sciences, 1999

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References

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