Femtosecond dynamics of electron capture and decapture in a single quantum well structure

Jawad Qureshi; Kai Shum

doi:10.1117/12.349306

24 May 1999 Femtosecond dynamics of electron capture and decapture in a single quantum well structure

Jawad Qureshi, Kai Shum

Proceedings Volume 3624, Ultrafast Phenomena in Semiconductors III; (1999) https://doi.org/10.1117/12.349306
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

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.

Citation Download Citation

Jawad Qureshi and Kai Shum "Femtosecond dynamics of electron capture and decapture in a single quantum well structure", Proc. SPIE 3624, Ultrafast Phenomena in Semiconductors III, (24 May 1999); https://doi.org/10.1117/12.349306

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