Photoluminescence excitation measurements in the 1.1-1.6 μm spectral range

Pressure-tuned laser diodes are used for photoluminescence excitation in quantum-well samples grown on InP. With two bent-waveguide, external cavity lasers, the spectral range from 1.1 to 1.6 μm can be covered. This range is important for telecommunication devices, for quantum-dot emitters etc. while it is inaccessible to solid-state tunable lasers or dye lasers.