High power surface-grating stabilized narrow-stripe broad area lasers with beam parameter product < 2 mm×mrad

Narrow-stripe (30 μm aperture) broad area lasers with monolithically integrated DFB-surface-gratings deliver 5 W optical output per emitter with 50% conversion efficiency, spectral width ≤ 1 nm from 970…980 nm, and beam parameter product < 2 mm×mrad.

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