Nonlinear optics and saturation behavior of quantum dot samples under continuous wave driving

Ackemann, T. and Tierno, A. and Kuszelewicz, R. and Barbay, S. and Brambilla, M.G. and Leburn, C. G. and Brown, C. T. A.; Wang, Z.M., ed. (2012) Nonlinear optics and saturation behavior of quantum dot samples under continuous wave driving. In: Quantum dot devices. Lecture Notes in Nanoscale Science and Technology, 13 . Springer, New York, pp. 251-295. ISBN 9781461435693 (https://doi.org/10.1007/978-1-4614-3570-9)

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Abstract

The nonlinear optical response of self-assembled quantum dots is relevant to the application of quantum dot based devices in nonlinear optics, all-optical switching, slow light and self-organization. Theoretical investigations are based on numerical simulations of a spatially and spectrally resolved rate equation model, which takes into account the strong coupling of the quantum dots to the carrier reservoir created by the wetting layer states. The complex dielectric susceptibility of the ground state is obtained. The saturation is shown to follow a behavior in between the one for a dominantly homogeneously and inhomogeneously broadened medium. Approaches to extract the nonlinear refractive index change by fringe shifts in a cavity or self-lensing are discussed. Experimental work on saturation characteristic of InGa/GaAs quantum dots close to the telecommunication O-band (1.24-1.28 mm) and of InAlAs/GaAlAs quantum dots at 780 nm is described and the first demonstration of the cw saturation of absorption in room temperature quantum dot samples is discussed in detail.

  • Item type:Book Section
    ID code:37596
    Dates:
    Date
    Event
    2012
    Published
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 Feb 2012 09:13
    Last modified:20 Apr 2024 00:03
    URI:https://strathprints.strath.ac.uk/id/eprint/37596
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