Mechanisms and dynamics of optical nonlinearities in semiconductor nanocrystals

Daniel Ricard; M. Ghanassi; Marie C. Schanne-Klein; Christos Flytzanis

doi:10.1117/12.242145

10 June 1996 Mechanisms and dynamics of optical nonlinearities in semiconductor nanocrystals

Daniel Ricard, M. Ghanassi, Marie C. Schanne-Klein, Christos Flytzanis

Proceedings Volume 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials; (1996) https://doi.org/10.1117/12.242145
Event: International Conference on Coherent and Nonlinear Optics, 1995, St. Petersburg, Russian Federation

Abstract

In this paper, we discuss the dynamics of carrier recombination in semiconductor nanoparticles embedded in a glass matrix, forming the so-called semiconductor-doped glasses. We observe that carrier recombination may be made faster by photodarkening and, at high excitation intensity, by Auger processes. We also discuss the mechanisms of the resonant optical Kerr effect in these materials. It is shown to be comprised of a fast component due to free carriers in particles without traps and of a slow one due to trapped carriers in particles with traps. The figure of merit associated with the fast component decreases when the particle size decreases.

Citation Download Citation

Daniel Ricard, M. Ghanassi, Marie C. Schanne-Klein, and Christos Flytzanis "Mechanisms and dynamics of optical nonlinearities in semiconductor nanocrystals", Proc. SPIE 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials, (10 June 1996); https://doi.org/10.1117/12.242145

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