Tomic, S., Milanovic, V. and Ikonic, Z. (2001) Gain optimization in optically pumped AlGaAs unipolar quantum-well lasers. IEEE Journal of Quantum Electronics, 37 (10). pp. 1337-1344. ISSN 0018-9197
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Abstract
A method is described for the optimized design of quantum-well (QW) structures, in respect to maximizing the stimulated gain in optically pumped intersubband lasers. It relies on applying supersymmetric quantum mechanics (SUSYQM) to an initial Hamiltonian, in order to both map one bound state below the spectral range of the initial Hamiltonian, and to generate a parameter-controlled family of isospectral Hamiltonians with the desired energy spectrum. By varying the control parameter, one changes the potential shape and, thus, the values of dipole matrix elements and electron-phonon scattering matrix elements. The use of this procedure is demonstrated by designing smoothly graded and stepwise-constant Al/(x)Ga/(1-x). As ternary alloy QWs, with the self-consistent potential taken into account. Finally, the possibility of employing layer interdiffusion to get optimal smooth potentials is discussed
| Item Type: | Article |
|---|---|
| Copyright, Publisher and Additional Information: | Copyright © 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| Keywords: | lLayer interdiffusion, quantum-well lasers, supersymmetric quantum mechanics |
| Academic Units: | The University of Leeds > Faculty of Engineering (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Microwaves and Photonics (Leeds) |
| Depositing User: | Sherpa Assistant |
| Date Deposited: | 28 Mar 2006 |
| Last Modified: | 08 Feb 2013 17:02 |
| Published Version: | http://dx.doi.org/10.1109/3.952546 |
| Status: | Published |
| Refereed: | Yes |
| Identification Number: | 10.1109/3.952546 |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/716 |
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