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). ISSN 1098-0121
Full text not available in this repository. (Request a copy from the Strathclyde author)Abstract
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.
| Item type: | Article |
|---|---|
| ID code: | 19028 |
| Keywords: | linewidth enhancement factor, semiconductor optical amplifiers, differential efficiency, feedback solitons, gain saturation, cavity solitons, lasers, beam, filamentation, pattern, Physics |
| Subjects: | Science > Physics |
| Department: | Faculty of Science > Physics |
| Related URLs: | |
| Depositing user: | Strathprints Administrator |
| Date Deposited: | 25 May 2010 11:49 |
| Last modified: | 12 Mar 2012 11:11 |
| URI: | http://strathprints.strath.ac.uk/id/eprint/19028 |
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