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Proceedings Paper

Femtosecond dynamics of electron capture and decapture in a single quantum well structure
Author(s): Jawad Qureshi; Kai Shum
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Paper Abstract

Electron capturing and de-capturing dynamics in a single semiconductor quantum well due to the interaction with longitudinal optical phonons are studied by directly solving the time-dependent Schrodinger equation. Time-dependent wave functions are calculated with an initial electron wave packet impinging on the quantum well, being reflected and transmitted, captured into and de-captured from the quantum well. We have obtained new information on electron capture and de-capture times as function of electron-phonon coupling strength. The red energy shift of ground state energy is also found to be linearly proportional to the electron- phonon interaction strength. These results can not be simply obtained using Fermi Golden Rule.

Paper Details

Date Published: 24 May 1999
PDF: 4 pages
Proc. SPIE 3624, Ultrafast Phenomena in Semiconductors III, (24 May 1999); doi: 10.1117/12.349306
Show Author Affiliations
Jawad Qureshi, CUNY/City College (United States)
Kai Shum, CUNY/City College (United States)

Published in SPIE Proceedings Vol. 3624:
Ultrafast Phenomena in Semiconductors III
Kong-Thon F. Tsen, Editor(s)

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