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A high-power 1.55 μm large optical cavity (LOC) laser structure is successfully prepared for the first time by reasonably designing its configuration and by using a proper single step liquid phase epitaxy (LPE) so as to realize lasers with peak output power higher than 2 W per facet in pulsed operation at room temperature. The devices are also characterized by their lower threshold current ( Jth≤2.7 KA/cm2 for broad area contact structure) and high-temperature stability (T0≊130 K). At the same time they are of long-lived operation and are an ideal source of light in this spectral region.
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Zhong et al. (1991) studied this question.
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