Abstract
The influence of the taper losses on the temperature induced wavelength shift of tapered quantum dot laser diodes emitting at 920nm was investigated. The experimentally obtained results of the taper losses were compared with simulations carried out by a self-consistent, complete steady-state electrical, thermal, and optical model. A good agreement between theory and experiment was found. The device geometry with a length of 3mm and a front facet width of 35μm yielded the best wavelength stability of 0.14nm∕K and exhibits an output power of more than 900mW with a beam-propagation factor M2 of 2.4.
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