Electroreflectance (ER) spectroscopy is used to study a GaAs-AlGaAs symmetrically coupled double quantum well as a function of external bias. By comparing the ER spectra taken at the second-harmonic and fundamental (1f) modulation frequencies, and the first derivative of the 1f spectrum, the features associated with red and blue shifts are unambiguously identified.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry