Two-wavelength disordered quantum-well photodetector
- 4 February 1988
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 24 (3) , 181-182
- https://doi.org/10.1049/el:19880120
Abstract
A GaAs/AlGaAs waveguide photodetector combining disordered and as-grown quantum well photodiodes is described. The disordered section serves both as short wavelength photodiode and as a passive waveguide to transmit longer wavelengths to the as-grown section. Optical absorption and photocurrent spectra demonstrate the absorption edge shift due to disordering and the two wavelength-band selectivity of the device.Keywords
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