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High power InGaAs-GaAs distributed feedback (DFB) lasers with nonabsorbing mirrors have been fabricated with over 200 mW of single frequency CW optical power at 25°C (110 mW at 95°C). Unlike their distributed Bragg reflector counterparts, the DFB devices exhibit relatively linear optical power against current curves. Low threshold currents of ~10 mA were also obtained.
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Lammert et al. (1998) studied this question.
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