Characterisation of double quantum well GaAs/AlGaAs diode lasers

Abstract
High-power, double quantum well, separate confinement GaAs/AlGaAs diode lasers are characterised by power against current and spectral measurements. Short cavity length devices exhibit lower threshold current densities than equivalent single-quantum-well devices. Unlike singlequantum- well devices, no n = 2 transitions are observed even for devices as short as 150 μm at 80°C. These devices are more suitable for monolithic surface-emitting applications.

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