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HL: Fachverband Halbleiterphysik
HL 60: Poster II: Optical Properties, incl. Photonic Crystals and Ultrafast Phenomena
HL 60.1: Poster
Donnerstag, 25. März 2010, 18:00–20:00, Poster D1
A numerical adaptive wavelet approach to excitonic absorption spectra of disordered semiconductor nanostructures — •Christian Mollet1, Torsten Meier2, and Angela Kunoth1 — 1Institut für Mathematik, University Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany — 2Department of Physics and CeOPP, University Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
Semiconductor nanostructures always contain a certain degree of disorder due to interface roughness and/or alloy disorder. The disorder has significant in uence on the optical properties, e.g., excitonic absorption spectra [1]. An adaptive wavelet approach [2,3] for the solution of the excitonic Schrödinger equation, i.e., the semiconductor Bloch equation for the interband coherence linear in the external field, has been developed and applied to compute absorption spectra and/or wave functions. Results obtained for a thin GaAs semiconductor quantum wire considering a number of different model disorder potentials are presented and discussed.
[1] T. Meier, P. Thomas, and S. W. Koch, Coherent Semiconduc- tor Optics: From Basic Principles to Nanostructure Applications, Springer, Berlin, 2007.
[2] W. Dahmen, T. Rohwedder, R. Schneider, and A. Zeiser, Numer. Math. 110, 277-312 (2008).
[3] C. Burstedde and A. Kunoth, Numer. Algor. 48, 161-188 (2008).