Ultralow-loss broadened-waveguide high-power 2 μm AlGaAsSb/InGaAsSb/GaSb separate-confinement quantum-well lasers
- 30 September 1996
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 69 (14) , 2006-2008
- https://doi.org/10.1063/1.116861
Abstract
Broadening the waveguides of 2 μm AlGaAsSb/InGaAsSb separate‐confinement multiquantum‐well lasers decreases their internal losses to 2 cm−1, while threshold current densities remain as low as 300 A/cm2. The consequently high cw differential efficiency of 0.36 results in output powers of 1.2 W from 100 μm aperture lasers at 15 °C.Keywords
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