Photoinduced Electron Transfer Counter to the Bias Field in Coupled Quantum Wells
Abstract
Optical excitation of electrons in an asymmetric double quantum well is theoretically examined. The well is biased to align the excited levels and permit resonant electron tunneling. Emphasis is made on the photoinduced transfer of electrons counter to the bias electric field force. A density- matrix approach is developed to describe optical excitations in the presence of an arbitrary dephasing. The excitation profiles obtained for cases of different dephasing reveal the full range of tunneling coupling between the wells from completely coherent to incoherent (stepwise).
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1992
- Accession Number
- ADA254719
Entities
People
- Lakshmi N. Pandey
- Leonid S. Muratov
- Mark I Stockman
- Thomas F. George
Organizations
- Washington State University