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A semiconductor injection device consisting of 10 periodically spaced filaments coupled by curved waveguide sections has been demonstrated. This coupled-multiple-stripe (CMS) laser produces a phase-locked TE polarized beam with a linear powerd–vs–pumping-current characteristic up to 0.9 W/facet and a beam divergence of less than ≈4° along the p-n junction plane in pulsed operation at room temperature. The threshold is 400 mA and differential quantum efficiencies of 65% are observed.
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Scifres et al. (1979) studied this question.
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