Abstract
The authors report buried-heterostructure long-wavelength VCSELs with GaAs/AlGaAs metamorphic DBRs, which has a potential for low thermal resistance and operation in the single transverse mode with a large emission area. In spite of their being upside-up and unmounted, they achieve CW operation at 17°C, and VCSELs with a 15-µm mesa exhibit single-mode operation.
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