High-performance 980 nm quantum dot lasers forhigh-power applications

High-performance quantum dot lasers emitting at 980 nm with output powers of up to 4 W CW from a single facet (AR/HR coating, 100 µm stripe width) have been fabricated. Wall-plug efficiencies > 50% were achieved at room temperature. Owing to an improved carrier confinement output powers as high as 1 W CW can be obtained from the fundamental dot transition even at temperatures as high as 110°C.