Calculation of exciton suppression in quantum well filled by 2D electron gas and resultant modification of modulation spectra

Ivan A. Avrutsky; Alexey V. Vosmishev

doi:10.1117/12.226207

3 November 1995 Calculation of exciton suppression in quantum well filled by 2D electron gas and resultant modification of modulation spectra

Ivan A. Avrutsky, Alexey V. Vosmishev

Author Affiliations +

Proceedings Volume 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics; (1995) https://doi.org/10.1117/12.226207
Event: International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, 1995, Kiev, Ukraine

Abstract

We present an algorithm and results of calculation of the binding energy and the oscillator strength of an exciton in a GaAs/InGaAs/GaAs single strained quantum well taking into account self consistency effects and phase space filling. We assume that the well is placed in a depletion region and the well filling by free carriers is governed by a surface voltage. The wave functions of the charge carriers motion in the direction transverse to the well plane were calculated via self-consistent solution of Schreodinger and Poisson equations. The exciton binding energy, wave functions of in-plane motion and oscillator strength were found by a variational approach. The variational function of the exciton was chosen in the form that explicitly includes the phase space filling. It is found that the dependence of the binding energy and oscillator strength of the exciton versus the surface voltage is not monotonic. This is explained by a competition of the self consistency effects and the phase space filling.

Citation Download Citation

Ivan A. Avrutsky and Alexey V. Vosmishev "Calculation of exciton suppression in quantum well filled by 2D electron gas and resultant modification of modulation spectra", Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); https://doi.org/10.1117/12.226207

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