Abstract
A large energy shift of excitonic absorption peaks in quaternary InGaAlAs quantum wells operating in the 1.5 µm wavelength region has been demonstrated in a waveguide configuration. Shifts of up to 30 meV (600 Å) and 17 meV (270 Å) have been achieved for the electron-to-heavy-hole and the electron-to-light-hole exciton absorption peaks, respectively. These shifts were obtained using a reverse bias of 6 V and without causing large broadening of exciton features. These values agree well with the calculated values.
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