19 April 1996 Transfer efficiency of guided electron waves in coupled quantum wells
Author Affiliations +
Abstract
Theoretical formulations based on a coupled-mode theory and a supermode theory are developed for discussing transfer efficiency of guided electron waves in coupled quantum well structures. We apply a coupled-mode theory to electron waveguide couplers in the weak coupling regime and show that the transfer efficiency will not be greater than 100%. In the strong coupling regime, we can appropriately handle the electron waves in coupled quantum well waveguide structures by introducing a supermode theory, and demonstrate that the transfer efficiency is always less than 100%. We discuss the underlying physics in an attempt to gain an insight into the transfer efficiency related issues. Calculations for specific semiconductor quantum well structures such as GaAs/AlGaAs quantum wells are given for quantitative illustrations.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rui Q. Yang, Rui Q. Yang, C.H. Thompson Lin, C.H. Thompson Lin, Shin Shem Pei, Shin Shem Pei, } "Transfer efficiency of guided electron waves in coupled quantum wells", Proc. SPIE 2694, Quantum Well and Superlattice Physics VI, (19 April 1996); doi: 10.1117/12.238394; https://doi.org/10.1117/12.238394
PROCEEDINGS
10 PAGES


SHARE
RELATED CONTENT


Back to Top