Quantum Confined Stark Effect In Asymmetric Double Quantum Wells

Yehiam Prior; J. E. Golub; P. F. Liao; D. J. Eilenberger; J. P. Harbison; L. T. Florez

doi:10.1117/12.950623

18 May 1989 Quantum Confined Stark Effect In Asymmetric Double Quantum Wells

Yehiam Prior, J. E. Golub, P. F. Liao, D. J. Eilenberger, J. P. Harbison, L. T. Florez

Proceedings Volume 1033, Trends in Quantum Electronics; (1989) https://doi.org/10.1117/12.950623
Event: International Conference on Trends in Quantum Electronics, 1988, Bucharest, Romania

Abstract

The effects of an external electric field on the luminescence and absorbtion properties of asymmetric coupled quantum wells (ACQW) structures consisting of two quantum wells of different width and depth are investigated. Experimental results are presented for two GaAs/AlGaAs coupled well systems, demonstrating the large shift and the sharp turnoff of the wavefunction overlap. We have observed the transition from type I (spatially direct) to type II (spatially indirect) in GaAs/AlGaAs ACQW. The transition is manifested as a strong electric field-induced quenching of the photoluminescence which correlates well with the results of a single particle calculation of the electron-hole overlap. By properly designing the coupled well structure, photoluminescence quenching (90% - 10%) is observed for a change in bias field of only 5 kV/cm. Owing to the large level repulsion, a Stark shift of 5 meV is observed when the bias field is switched by only 18 kV/cm.

Citation Download Citation

Yehiam Prior, J. E. Golub, P. F. Liao, D. J. Eilenberger, J. P. Harbison, and L. T. Florez "Quantum Confined Stark Effect In Asymmetric Double Quantum Wells", Proc. SPIE 1033, Trends in Quantum Electronics, (18 May 1989); https://doi.org/10.1117/12.950623

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available