Saturation and self-lensing in self-assembled quantum dots with constant-wave driving
Tierno, A. and Ackemann, T. and Maggipinto, T. and Brambilla, M.G. (2009) Saturation and self-lensing in self-assembled quantum dots with constant-wave driving. Physical Review B, 80 (3). 035314. ISSN 1098-0121 (https://doi.org/10.1103/PhysRevB.80.035314)
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The nonlinear optical response of self-assembled quantum dots to cw driving is analyzed via numerical simulations of a spatially resolved rate equation model. The saturation is shown to follow a behavior in between the one for a dominantly, homogeneously, and inhomogeneously broadened medium. Self-lensing is suggested to probe the refractive-index nonlinearities and to open a complementary way of characterizing phase-amplitude coupling (alpha factor) in quantum-dots samples. For conservative assumptions on current samples the minimum focal length is predicted to be +/-1.7 mm for an input beam with 15 mu m radius at a detuning of 1.1 inhomogeneous linewidths from gain center.
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Item type: Article ID code: 19028 Dates: DateEventJuly 2009PublishedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Strathprints Administrator Date deposited: 25 May 2010 10:49 Last modified: 08 Apr 2024 17:54 URI: https://strathprints.strath.ac.uk/id/eprint/19028